Endocrinology and Metabolism

Bong Yun Cha (Cha BY)

43 Articles

Thyroid
Natural Course of Cytologically Benign Thyroid Nodules: Observation of Ultrasonographic Changes: Dong Jun Lim, Jee Young Kim, Ki Hyun Baek, Mee Kyoung Kim, Woo Chan Park, Jong Min Lee, Moo Il Kang, Bong Yun Cha; Endocrinol Metab. 2013;28(2):110-118. Published online June 18, 2013; DOI: https://doi.org/10.3803/EnM.2013.28.2.110

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Background

The natural course of cytologically benign thyroid nodules remains unclear. The aim of this study was to evaluate whether ultrasonographic (US) changes are associated with changes in nodule volume during follow-up.

Methods

We retrospectively reviewed over 4 years of clinical records of patients with benign thyroid nodules as confirmed by fine needle aspiration (FNA). In total, 186 patients with 202 benign thyroid nodules were included for study. We assessed for changes in nodule volume and examined the cystic portion of the nodule as well as four US features (echogenicity, margin, calcification pattern, and shape).

Results

During follow-up (mean, 21.7±10.7 months) and using 50% as a cutoff value, nodule volumes increased in 11.8%, exhibited no change in 79.9%, and decreased in 8.3% of patients. Proportion of nodules demonstrating at least one US change was 20.8% (42/202). The most common US changes (in descending order of frequency) were cystic change, margin change, and calcification pattern change. Nodule shape and echogenicity rarely changed. Increased nodule volume was not significantly associated with any US features or with the number of FNAs but was associated with younger age at time of diagnosis.

Conclusion

Although a portion of thyroid nodules confirmed as benign showed US changes or volume changes during the follow-up period, these findings may only represent the natural course of benign nodules. Frequent follow-up with US might be needed for only a small number of cases with suspicious US findings.

Citations

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Follow-up of benign thyroid nodules confirmed by ultrasound-guided core needle biopsy after inconclusive cytology on fine-needle aspiration biopsy
Yoon Ji Hwang, Hye Ryoung Koo, Jeong Seon Park
Ultrasonography.2023; 42(1): 121. CrossRef
Clinical Characteristics, Diagnostic Approach and Outcome of Thyroid Incidental Findings vs. Clinically Overt Thyroid Nodules: An Observational Single-Centre Study
Tom Jansen, Nike Stikkelbroeck, Annenienke van de Ven, Ilse van Engen-van Grunsven, Marcel Janssen, Han Bonenkamp, Martin Gotthardt, Romana T. Netea-Maier
Cancers.2023; 15(8): 2350. CrossRef
Association between various thyroid gland diseases, TSH values and thyroid cancer: a case–control study
Leif Schiffmann, Karel Kostev, Matthias Kalder
Journal of Cancer Research and Clinical Oncology.2020; 146(11): 2989. CrossRef
TI-RADS und andere sonografische Klassifikationssysteme für Schilddrüsenknoten
Julian M. M. Rogasch, Christoph Wetz, Winfried Brenner
Onkologie up2date.2020; 2(03): 223. CrossRef
TI-RADS und andere sonografische Klassifikationssysteme für Schilddrüsenknoten
Julian M.M. Rogasch, Christoph Wetz, Winfried Brenner
Radiopraxis.2020; 13(01): E1. CrossRef
Changes of Nodular Size and Its Risk Factors in Iodine-Sufficient Area: a Retrospective Cohort Analysis of 7753 Thyroid Nodules
Hwa Young Ahn, Kyung Won Kim, Hoon Sung Choi, Jae Hoon Moon, Ka Hee Yi, Min Kyung Hyun, Min Joo Kang, Jung Im Shim, Ja Youn Lee, Do Joon Park, Young Joo Park
International Journal of Thyroidology.2020; 13(2): 118. CrossRef
Comparison of Natural Course between Thyroid Cancer Nodules and Thyroid Benign Nodules
Kyun-Jin Yun, Jeonghoon Ha, Min-Hee Kim, Ye Young Seo, Mee Kyoung Kim, Hyuk-Sang Kwon, Ki-Ho Song, Moo Il Kang, Ki-Hyun Baek
Endocrinology and Metabolism.2019; 34(2): 195. CrossRef
Risk factors for hypothyroidism in euthyroid thyroid nodule patients with lymphocytic thyroiditis on fine needle aspiration cytology
Jeong-Min Lee, Jeonghoon Ha, Kwanhoon Jo, Yejee Lim, Min-Hee Kim, Chan-Kwan Jung, So-Lyung Jung, Moo-Il Kang, Bong-Yun Cha, Dong-Jun Lim
The Korean Journal of Internal Medicine.2019; 34(6): 1287. CrossRef
Evaluation of the natural course of thyroid nodules in patients with acromegaly
Sema Ciftci Dogansen, Artur Salmaslioglu, Gulsah Yenidunya Yalin, Seher Tanrikulu, Sema Yarman
Pituitary.2019; 22(1): 29. CrossRef
TI-RADS und andere sonografische Klassifikationssystemefür Schilddrüsenknoten
Julian M.M. Rogasch, Christoph Wetz, Winfried Brenner
Der Nuklearmediziner.2019; 42(03): 206. CrossRef
Molecular profiling of thyroid nodule fine-needle aspiration cytology
Markus Eszlinger, Lorraine Lau, Sana Ghaznavi, Christopher Symonds, Shamir P. Chandarana, Moosa Khalil, Ralf Paschke
Nature Reviews Endocrinology.2017; 13(7): 415. CrossRef
Diagnostic accuracy of thyroid nodule growth to predict malignancy in thyroid nodules with benign cytology: systematic review and meta‐analysis
Naykky Singh Ospina, Spyridoula Maraka, Ana Espinosa DeYcaza, Derek O'Keeffe, Juan P. Brito, Michael R. Gionfriddo, M. Regina Castro, John C. Morris, Patricia Erwin, Victor M. Montori
Clinical Endocrinology.2016; 85(1): 122. CrossRef
Rapid thyroid nodule growth is not a marker for well-differentiated thyroid cancer
Claudius Falch, Steffen Axt, Bettina Scuffi, Alfred Koenigsrainer, Andreas Kirschniak, Sven Muller
World Journal of Surgical Oncology.2015;[Epub] CrossRef
Predicting the Size of Benign Thyroid Nodules and Analysis of Associated Factors That Affect Nodule Size
Seok Ho Seo, Tae Hyun Kim, Soon Ho Kim, Seung Hyun Lee, Jong Taek Kim, Dae Won Park, Dong Chul Lee
Chonnam Medical Journal.2015; 51(2): 97. CrossRef
Thyroid ultrasound findings in a follow-up survey of children from three Japanese prefectures: Aomori, Yamanashi and Nagasaki
Naomi Hayashida, Misa Imaizumi, Hiroki Shimura, Fumihiko Furuya, Noriyuki Okubo, Yasushi Asari, Takeshi Nigawara, Sanae Midorikawa, Kazuhiko Kotani, Shigeyuki Nakaji, Akira Ohtsuru, Takashi Akamizu, Masafumi Kitaoka, Shinichi Suzuki, Nobuyuki Taniguchi, S
Scientific Reports.2015;[Epub] CrossRef
Brief Review of Articles in 'Endocrinology and Metabolism' in 2013
Won-Young Lee
Endocrinology and Metabolism.2014; 29(3): 251. CrossRef
Natural Course of Cytologically Diagnosed Benign Thyroid Nodules
Eun-Kyung Kim
Journal of Korean Thyroid Association.2014; 7(2): 136. CrossRef
Ruling in or ruling out thyroid malignancy by molecular diagnostics of thyroid nodules
Markus Eszlinger, László Hegedüs, Ralf Paschke
Best Practice & Research Clinical Endocrinology & Metabolism.2014; 28(4): 545. CrossRef
Insufficient Experience in Thyroid Fine-Needle Aspiration Leads to Misdiagnosis of Thyroid Cancer
Jung Il Son, Sang Youl Rhee, Jeong-taek Woo, Won Seo Park, Jong Kyu Byun, Yu-Jin Kim, Ja Min Byun, Sang Ouk Chin, Suk Chon, Seungjoon Oh, Sung Woon Kim, Young Seol Kim
Endocrinology and Metabolism.2014; 29(3): 293. CrossRef
Clinical Outcomes in Patients with Non-Diagnostic Thyroid Fine Needle Aspiration Cytology: Usefulness of the Thyroid Core Needle Biopsy
Sung Hak Lee, Min Hee Kim, Ja Seong Bae, Dong Jun Lim, So Lyung Jung, Chan Kwon Jung
Annals of Surgical Oncology.2014; 21(6): 1870. CrossRef
Letter: Natural Course of Cytologically Benign Thyroid Nodules: Observation of Ultrasonographic Changes (Endocrinol Metab 2013;28:110-8, Dong Jun Lim et al.)
Sun Wook Cho
Endocrinology and Metabolism.2013; 28(3): 241. CrossRef
Natural Course of Benign Thyroid Nodules
Kyung Won Kim
Endocrinology and Metabolism.2013; 28(2): 94. CrossRef
Response: Natural Course of Cytologically Benign Thyroid Nodules: Observation of Ultrasonographic Changes (Endocrinol Metab 2013;28:110-8, Dong Jun Lim et al.)
Dong Jun Lim, Ki Hyun Baek
Endocrinology and Metabolism.2013; 28(3): 243. CrossRef

Pregnancy-induced Osteoporosis Combined with Multiple Compression Fractures: A Case Report.: Ji Eun Lee, Jin Sun Jang, Sun Hee Ko, Min Hee Kim, Dong Jun Lim, Moo Il Kang, Bong Yun Cha, Sook Hee Hong, Ja seong Bae, Kyeoung Sik Ryu; Endocrinol Metab. 2011;26(2):150-154. Published online June 1, 2011; DOI: https://doi.org/10.3803/EnM.2011.26.2.150

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Abstract PDF

Pregnancy associated osteoporosis (PAO) is a rare condition. It may affect women during pregnancy or after the delivery and it can induce severe back pain. Physicians can find multiple compression fractures on the plain images of these patients. However, little is known about PAO, including the prevalence, the cause, the risk factors and the prognosis. Herein we report on a case of PAO in a 38-year-old female who suffered from severe back pain induced by multiple vertebral compression fractures. After excluding the possibility of unknown malignancy, the patient underwent vertebroplasty to improve the clinical symptom. The bone biopsy results confirmed multiple benign acute compression fractures. The patient was treated with oral bisphosphonate, calcium and vitamin D. She showed clinical improvement without developing any additional vertebral fracture. When young women during pregnancy or just after the delivery complain of persistent back pain, PAO should be considered in the differential diagnosis, and early recognition and treatment are needed for PAO.

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Effect of teriparatide on pregnancy and lactation-associated osteoporosis with multiple vertebral fractures
Eun Yeong Choe, Je Eun Song, Kyeong Hye Park, Hannah Seok, Eun Jig Lee, Sung-Kil Lim, Yumie Rhee
Journal of Bone and Mineral Metabolism.2012; 30(5): 596. CrossRef

A Case of Pituitary Abscess that was Difficult to Diagnose due to Repeated Symptomatic Responses to Every Corticosteroid Administration.: Jin Sun Jang, Jae Seung Yun, Jung Ah Shin, Min Hee Kim, Dong Jun Lim, Jae Hyung Cho, Kun Ho Yoon, Moo Il Kang, Bong Yun Cha, Ho Young Son, Yong Kil Hong; Endocrinol Metab. 2011;26(1):72-77. Published online March 1, 2011; DOI: https://doi.org/10.3803/EnM.2011.26.1.72

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Abstract PDF: Pituitary abscess is a rare pathology, but it is a potentially life-threatening condition. Therefore, timely intervention, including antibiotics and an operation, can prevent the morbidity and mortality in such cases. A 31-year-old woman, who was 16 months after her second delivery, presented with intermittent headache for 3 months. Amenorrhea, polyuria and polydipsia were noticed and the endocrinological hormone studies were compatible with panhypopituitarism and diabetes insipidus. Pituitary MRI demonstrated a 2.3 cm sized cystic mass with an upper small nodular lesion. Her symptoms such as headache and fever were repeatedly improved whenever corticosteroid was administered, which led us to suspect the diagnosis of an inflammatory condition like lymphocytic hypophysitis. During the hormone replacement therapy, her cystic pituitary mass had grown and her symptoms progressively worsened for another two months. The patient underwent trans-sphenoidal exploration and she turned out to have a pituitary abscess. At the 3-month follow-up, amenorrhea was noticed and her residual function of the pituitary was tested by a combined pituitary stimulation test. The results were compatible with panhypopituitarism. She received levothyroxine 100 microg, prednisolone 5 mg and desmopressin spray and she is being observed at the out-patient clinic. The authors experienced a patient with primary pituitary abscess that was confirmed pathologically and we report on its clinical course with a literature review.

Central Diabetes Insipidus Surmised as from Post-obstructive Diuresis after Decompression Treatment for Neurogenic Bladder.: Kang Woo Lee, Chul Woo Yang, Dong Jun Lim, Hyuk Sang Kwon, Mi Ja Kang, Eun Sook Kim, Kun Ho Yoon, Ho Young Son, Bong Yun Cha; J Korean Endocr Soc. 2009;24(2):144-147. Published online June 1, 2009; DOI: https://doi.org/10.3803/jkes.2009.24.2.144

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Abstract PDF

Post-obstructive diuresis after treatment for neurogenic bladder-induced obstructive kidney disease is a common symptom. As polyuria may develop in many other conditions as well, the present case is about a patient with a chief complaint of polyuria accompanied by nocturia, that was initially diagnosed as hydronephrosis due to the presence of neurogenic bladder and bladder dysfunction. The result of the water deprivation test, which was conducted for persistent diluted polyuria, yielded a final diagnosis of central diabetes insipidus, notwithstanding the strong impression of post-obstructive diuresis initially made because of a sudden increase in urine output after an indwelling catheter was inserted for bladder decompression.

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A Case of Septo-Optic Dysplasia Resulting in Central Diabetes Insipidus and Nonobstructive Bilateral Hydronephrosis
Jong Hyun Kim, Kwang Bok Lee, Jeonghun Lee, Soo Min Nam, Kang-Woo Lee, Eu Gene Hwang, Geon Gil
Korean Journal of Medicine.2014; 87(2): 209. CrossRef

A Patient with Primary Amyloidosis Misrecognized as Thyrotoxicosis-induced Heart Failure.: Seok Ju Lee, Seung Hwan Lee, Jung Yeon Chin, Youn Mi Song, Sung Won Lee, Min Hee Kim, Mi Ja Kang, Kang Woo Lee, Hyuk Sang Kwon, Kun Ho Yoon, Ho Young Son, Bong Yun Cha; J Korean Endocr Soc. 2008;23(5):332-336. Published online October 1, 2008; DOI: https://doi.org/10.3803/jkes.2008.23.5.332

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Abstract PDF: Amyloidosis is caused by deposition of insoluble amyloid protein in the extracellular space of organs and tissues. The causes of amyloidosis are classified as primary, secondary, and hereditary, and symptoms develop according to which organ is involved. Cardiac amyloidosis induces cardiomyopathy and is developed by deposition of amyloid proteins in cardiac tissue. We diagnosed a patient with rhabdomyolysis and thyrotoxicosis with underlying Graves' disease 5 years ago. The patient was readmitted recently complaining of general weakness and mild dyspnea, and was diagnosed as relapsed thyrotoxicosis. An echocardiogram was performed for the evaluation of dyspnea and the findings were compatible with infiltrative cardiomyopathy due to amyloidosis. A biopsy of the abdominal subcutaneous fat and rectal mucosa was performed, and diagnosis was amyloidosis with histologic findings. The cause of heart failure was therefore cardiac amyloidosis rather than thyrotoxicosis. This case indicates the importance of evaluating the cause of heart failure in patients with thyrotoxicosis.

A Case of Pneumocystis Carinii Pneumonia and Cutaneous Nocardiosis Associated with Ectopic ACTH Syndrome.: Hee Sun Jung, Seung Hwan Lee, Hee Yeon Kim, Eun Ho Chu, Kang Woo Lee, Mi Ja Kang, Ji Hyun Kim, Hyuk Sang Kwon, Kun Ho Yoon, Bong Yun Cha, Ho Young Son; J Korean Endocr Soc. 2008;23(1):44-50. Published online February 1, 2008; DOI: https://doi.org/10.3803/jkes.2008.23.1.44

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Abstract PDF: Cushing's syndrome is characterized by hypercortisolism and impairment of cell-mediated immune function, increasing the risk of opportunistic infection, as occurs in other immunocompromised groups such as organ transplant recipients, patients with lymphoreticular malignancy, or acquired immunodeficiency syndrome. We report a case of a 68-year-old woman who was affected with pneumocystis carinii pneumonia (PCP) 8 years ago and cutaneous nocardiosis this year. The patient was diagnosed with ectopic ACTH syndrome 8 years ago, but no ectopic ACTH secreting focus was found in radiologic imaging studies. She recovered from PCP and cutaneous nocardiosis after antibiotic (trimethoprim-sulfamethoxazole) administration. After the infection resolved, she underwent laparoscopic bilateral adrenalectomy and was not longer hypercortisolemic.

Retraction: Multi-country Study on the Prevalence and Clinical Features of Peripheral Arterial Disease in Type 2 Diabetic Patients Who are at High Risk for Atherosclerosis.: Sang Youl Rhee, Seungjoon Oh, Young Kil Choi, Doo Man Kim, Bong Yun Cha, Hyun Chul Lee, Seung Woo Ha, In Kyu Lee, Tae Sun Park, Min Young Chung, In Joo Kim, Moon Kyu Lee, Sung Soo Koong, Kyung Soo Park, Kyung Wan Min, Young Seol Kim; J Korean Endocr Soc. 2007;22(6):478. Published online December 1, 2007; DOI: https://doi.org/10.3803/jkes.2007.22.6.478

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Diabetic Ketoacidosis in a Patient with Long-term Clozapine Therapy.: Youn Joo Jeon, Seung Hwan Lee, Se Na Jang, Eun Sun Kim, Jeong Yo Min, Ji Hyun Kim, Soon Hwa Hong, Jae Hyoung Cho, Hyuk Sang Kwon, Kun Ho Yoon, Bong Yun Cha, Ho Young Son; J Korean Endocr Soc. 2007;22(5):376-380. Published online October 1, 2007; DOI: https://doi.org/10.3803/jkes.2007.22.5.376

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Abstract PDF

With the broad use of atypical anti-psychotics, altered glucose metabolism has become an item of concern to clinicians and patients. Among the atypical anti-psychotics, clozapine and olanzapine are associated with a relatively high incidence of diabetic ketoacidosis and newly developed diabetes. We report a case of diabetic ketoacidosis in a patient with long-term clozapine therapy. A 35-year-old male with schizophrenia, treated with clozapine for 9 years was admitted into hospital because of comatous mentality. Although never diagnosed with diabetes before, his clinical features were consistent with diabetic ketoacidosis and shock. The patient's serum amylase and lipase levels were elevated and an abdominal computed tomography showed peripancreatic fat infiltration, suggesting the possibility of acute pancreatitis. The patient's serum glucose levels normalized shortly after clozapine treatment. Moreover, the patient ceased all glucose lowering agents upon hospital discharge, and maintained normal blood glucose levels thereafter. As observed in this case, clinicians should carefully screen and monitor blood glucose levels and other clinical parameters in patients treated with atypical anti-psychotics.

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Two Cases of Diabetic Ketoacidosis Associated with Paliperidone Treatment in Schizophrenia
Hyun Ho Kim, Hae Kyung Yang, Hyoju Ham, Ho Wook Jeon, Joon Yub Lee, Sea Won Hwang, Bo Hyun Jang, Gi June Min, Jeong Min Lee, Seung-Hwan Lee
The Journal of Korean Diabetes.2014; 15(3): 178. CrossRef
Olanzapine-Induced Diabetic Ketoacidosis and Neuroleptic Malignant Syndrome with Rhabdomyolysis: A Case Report
Young Kyoung Sa, Hyeon Yang, Hee Kyoung Jung, Jang Won Son, Seong Su Lee, Seong Rae Kim, Bong Yeon Cha, Ho Young Son, Chi-Un Pae, Soon Jib Yoo
Endocrinology and Metabolism.2013; 28(1): 70. CrossRef

A Patient with Concurrent Medullary and Papillary Carcinoma of the Thyroid.: Seung Hee Yoo, Keun Joon Lim, Seung Hwan Lee, Ji Hyun Kim, Soon Hwa Hong, Jae Hyoung Cho, Chan Kwon Jung, Hyuk Sang Kwon, Kun Ho Yoon, Min Sik Kim, Bong Yun Cha, Ho Young Son; J Korean Endocr Soc. 2007;22(3):235-240. Published online June 1, 2007; DOI: https://doi.org/10.3803/jkes.2007.22.3.235

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Abstract PDF

The origin of medullary thyroid carcinoma and papillary thyroid carcinoma are embryogenically different, so these tumors have been thought to be independent of each other. We experienced a case of concurrent medullary and papillary thyroid carcinoma in one patient. The patient underwent total thyroidectomy and both two tumors were located at different lobes, respectively. Both tumors showed their own characteristic pathologic and immunohistochemical findings. The patient's elevated calcitonin level returned to the normal range after operation and there has been no evidence of recurrence. It is still controversial whether the concurrency is just coincidental or it arises from activation of a common tumorigenic pathway.

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A Case of Concurrent Papillary and Medullary Thyroid Carcinomas Detected as Recurrent Medullary Carcinoma after Initial Surgery for Papillary Carcinoma
Dongbin Ahn, Jin Ho Sohn, Ji Young Park
Journal of Korean Thyroid Association.2013; 6(1): 80. CrossRef

A Case of Pituitary Metastasis of Breast Cancer Presenting as Diabetes Insipidus and Panhypopituitarism.: Jae Wuk Kwak, Byung Soo Jie, Sun Hwa Hong, Ji Hyun Kim, Seung Hwan Lee, Jae Hyung Jo, Hyuk Sang Kwon, Kun Ho Youn, Bong Yun Cha, Ho Young Son; J Korean Endocr Soc. 2007;22(2):125-129. Published online April 1, 2007; DOI: https://doi.org/10.3803/jkes.2007.22.2.125

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Abstract PDF

Metastasis to the pituitary gland from systemic cancer is a rare condition. The breast and lung are the most common sites of primary tumor metastasis. Pituitary metastasis may present with diabetes insipidus, cranial nerve palsy and hypopituitarism, and diabetes insipidus is the most frequent symptom at presentation. We report here on a 44 year-old woman with pituitary metastasis from breast cancer, and she developed central diabetes insipidus and hypopituitarism. The clinical diagnosis was made by performing a water deprivation test, a combined pituitary test and a MRI brain scan, and the latter showed metastatic tumor in the pituitary gland with invasion of the pituitary stalk. Symptomatic relief was obtained with administration of desmopressin; the urine osmolarity was increased with this treatment. We report here on a case of pituitary metastasis from breast cancer and the patient developed central diabetes insipidus and hypopituitarism. We also include a review of the relevant literature.

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A Case of Pituitary Metastasis from Breast Cancer That Presented as Left Visual Disturbance
Young Ha Kim, Beom jun Lee, Kyung Jin Lee, Jin Hee Cho
Journal of Korean Neurosurgical Society.2012; 51(2): 94. CrossRef
A Case of Panhypopituitarism and Central Diabetes Insipidus Caused by Primary Central Nervous System Lymphoma
Mi Sun Ahn, Soon Sun Kim, Tae Ho Kim, Seung Jin Han, Dae Jung Kim, Hugh Chul Kim, Se Hyuk Kim, Jae Ho Han, Ho Sung Kim, Yoon-Sok Chung
Journal of Korean Endocrine Society.2008; 23(4): 260. CrossRef

Multi-country Study on the Prevalence and Clinical Features of Peripheral Arterial Disease in Type 2 Diabetic Patients Who are at High Risk for Atherosclerosis.: Sang Youl Rhee, Seungjoon Oh, Young Kil Choi, Doo Man Kim, Bong Yun Cha, Hyun Chul Lee, Seung Woo Ha, In Kyu Lee, Tae Sun Park, Min Young Chung, In Joo Kim, Moon Kyu Lee, Sung Soo Koong, Kyung Soo Park, Kyung Wan Min, Young Seol Kim; J Korean Endocr Soc. 2006;21(4):290-301. Published online August 1, 2006; DOI: https://doi.org/10.3803/jkes.2006.21.4.290

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Abstract PDF: BACKGROUND
PAD-SEARCH (Peripheral Arterial Disease-Screening and Evaluation of diabetic patients in Asian Regions Characterized by High risk factors) is the first international study to investigate the prevalence of peripheral arterial disease (PAD) in Asian type 2 diabetic patients and to demonstrate the relationships between the putative risk factors and PAD in this population. METHODS: A total of 6,625 type 2 diabetic patients (2,873 males and 3,752 females aged 50 and older) were enrolled in PAD-SEARCH in Korea, China, Taiwan, Hong Kong, Indonesia, Thailand and Philippines from October 2003 to March 2004. The Fukuda vascular profile VS-1000(TM) was used to determine the ankle-brachial index (ABI) and the brachial-ankle pulse wave velocity (baPWV). RESULTS: The mean patient age was 63.7 +/- 8.2 years and the mean duration of diabetes was 10.3 +/- 8.0 years. 1,172 (17.7%) subjects were diagnosed as PAD by the ABI (< or = 0.9). Subjects with PAD had a significantly longer duration of diabetes or hypertension, a higher HbA1c level and a significantly lower mean BMI than did the non-PAD subjects. In terms of the lipid profiles, triglyceride was the only significant variable. Notably, the mean ABI and baPWV in the females were significantly poorer than the age matched males for the in subjects with a normal ABI. However, the mean ABI and baPWV in males were significantly poorer than those of the age matched females for the subjects with PAD. On the multivariate analysis, gender, age, BMI, smoking status, duration of diabetes and a previous history of cerebrovascular disease were identified as the independent risk factors of PAD. CONCLUSION: These findings suggest that PAD is a common complication in Asian type 2 diabetic patients. Therefore, PAD screening and treatment should be emphasized for Asian diabetic patients with high risk factors.

A Case of Early Gastric Cancer Coincidentally Developed in a Patient with Acromegaly.: Kyun Woo Park, So Young Lee, Hye Suk Son, Yi Sun Jang, Hye Soo Kim, Jong Min Lee, Bong Yun Cha, Kwang Woo Lee, Ho Young Son, Sung Koo Kang; J Korean Endocr Soc. 2006;21(2):165-169. Published online April 1, 2006; DOI: https://doi.org/10.3803/jkes.2006.21.2.165

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Abstract PDF: Acromegaly is associated with an increased risk for a variety of cancers such as colon cancer, prostate cancer and breast cancer. However, there have been few reports of gastric cancer developing in an acromegaly patient. A 66-year-old man suffered with diabetes mellitus and hypertension for 15 years, and he visited the endocrinology department due to dizziness. On physical examination, the biochemical studies and the sella MRI, he showed the typical features of acromegaly with pituitary microadenoma. During the cancer screening studies to find the cause of anemia, early gastric cancer was diagnosed by pathologic examination of the tissue biopsies. We described the summary of characteristics of the patient and reviewed literature.

A Case of Atypical McCune-Albright Syndrome Associated with Hyperthyroidism.: Yi Sun Jang, Seok Hui Kang, Woong Ryoung Jung, Woo Tae Kim, Hye Soo Kim, Jong Min Lee, Sung Dae Moon, Bong Yun Cha, Kwang Woo Lee, Ho Young Son, Sung Koo Kang; J Korean Endocr Soc. 2006;21(2):158-164. Published online April 1, 2006; DOI: https://doi.org/10.3803/jkes.2006.21.2.158

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Abstract PDF: McCune-Albright syndrome (MAS) is a sporadic disease that's characterized by polyostotic fibrous dysplasia, cafe-au-lait pigmentation of the skin, and multiple endocrinopathies, including sexual precocity, hyperthyroidism, acromegaly, and hypercortisolism. Recent evidence has shown that the clinical manifestations are caused by a postzygotic activating missense mutation in the gene coding for the alpha-subunit of Gs protein that stimulates c-AMP formation in the affected tissues. Substitution of the Arg(201) residue in Gsalpha with cysteine or histidine have been identified in many MAS patients and Arg(201) to Gly or Leu mutations have also been recently identified. We identified the Arg(201) to His mutation in the gene encoding Gsalpha in the thyroid tissue from a 36-year-old man who was suffering with polyostotic fibrous dysplasia and hyperthyroidism.

The Changes in the Serum RANKL and OPG levels after Bone Marrow Transplantation: Association with Bone Mineral Metabolism.: Hyun Jung Tae, Ki Hyun Baek, Eun Sook Oh, Ki Won Oh, Won Young Lee, Hye Soo Kim, Je Ho Han, Bong Yun Cha, Kwang Woo Lee, Ho Young Son, Sung Koo Kang, Choon Choo Kim, Moo Il Kang; J Korean Endocr Soc. 2005;20(1):40-51. Published online February 1, 2005; DOI: https://doi.org/10.3803/jkes.2005.20.1.40

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Abstract PDF: BACKGROUND
The loss of bone mass is usually detected after bone marrow transplantation(BMT), particularly during the early post-transplant period. We recently reported that enhanced bone resorption following BMT was related to both the steroid dose and increase in IL-6. It was also suggested damage of the marrow microenvironment due to myeloablation and changes in bone growth factors contribute to post-BMT bone loss. Recently, the interactions of OPG and RANKL have been reported to be crucial in osteoclastogenesis and therefore in bone homeostasis. There are few data on the changes in RANKL/OPG status during the post-BMT period. This study investigated the changes in the levels of RANKL and OPG during the post-BMT period, and also assessed whether the changes in these cytokine levels actually influenced bone turnover and post-BMT bone loss. METHODS: We prospectively investigated 110 patients undergoing allogenic BMT and analyzed 36 (32.4+/-1.3 years, 17 men and 19 women) where DEXA was performed before and 1 year after the BMT. The serum bone turnover marker levels were measured before and 1, 2, 3, 4 and 12 wks, 6 Ms, and 1 yr after the BMT. The serum sRANKL and OPG levels were measured in all patients before and 1, 3 and 12 wks after the BMT. RESULTS: The mean bone losses in the lumbar spine and total proximal femur, which were calculated as the percent change from the baseline to 1 yr, were 5.2(P<0.01) and 11.6%(P<0.01), respectively. The mean serum ICTP, a bone resorption marker, increased progressively until 3 and 6 months after the BMT, but decreased gradually thereafter, reaching the basal values after 1 year. The serum osteocalcin levels decreased progressively until 3 wks after the BMT, then increased transiently at 3 and 6 Ms, but returned to the basal level by 1 yr. The serum sRANKL and OPG levels had increased significantly by weeks 1 and 3 compared with the baseline(P<0.01), but decreased at 3 months. The sRANKL/OPG ratio increased progressively until 3 weeks, but then decreased to the basal values. During the observation period, the percent changes from the baseline in the serum RANKL levels and RANKL/OPG ratio showed positive correlations with the percent changes from the baseline serum ICTP levels. Patients with higher RANKL levels and RANKL/OPG ratio during the early post-BMT period lost more bone mass at the lumbar spine. CONCLUSION: In conclusion, dynamic changes in the sRANKL and OPG levels were observed during the immediate post-BMT period, which were related to a decrease in bone formation and loss of L-spine BMD during the year following the BMT. Taken together, these results suggest that increased sRANKL levels and sRANKL/OPG ratios could be involved in a negative balance in bone metabolism following BMT.

A Case of the Milk-alkali Syndrome During Management of Idiopathic Hypoparathyroidism.: Yong Wan Park, Sung Rae Kim, Jung Min Lee, Seong Hun Kim, Sang Woo Han, Soon Jib Yoo, Kun Ho Yoon, Moo Il Kang, Bong Yun Cha, Kwang Woo Lee, Ho Young Son, Sung Koo Kang; J Korean Endocr Soc. 2004;19(4):439-445. Published online August 1, 2004

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Abstract PDF: Idiopathic hypoparathyroidism is a relatively rare disease characterized by hypocalcemia and hyperphosphatemia: this is due to a deficiency or a sereretory disorder of the parathyroid hormone without any prior operation nor underlying medical disoder. Calcium carbonate and vitamin D substitution are generally considered as the mainstay of therapy, but these treatments can cause hypercalcemia and hypercalciuria. Persistent ingestion of large amount of calcium carbonate can cause milk-alkali syndrome that is characterized by hypercalcemia, metabolic alkalosis and renal failure. Once a patient is diagnosed with milk-alkali syndrome, withdrawal of calcium carbonate and vitamin D is essential and treatment with saline diuresis and furosemide is the usually effective. In treatmenf of hypoparathyroidism with calcium carbonate and vitamin D substitution, evaluation of serum calcium and urinary calcium excretion is essential to avoid hypercalcemia and ypercalciuria. We concluded that during treatment with calcium carbonate and vitamin D substitution for patients with idiopathic hypoparathyroidism, they should have carefully laboratory monitoring, and they should be made aware of the circumstances influencing calcium metabolism

Primary Hyperaldosteronism with Increased Plasma Renin Activity due to Secondary Hypertensive Renal Impairment.: Kang Woo Lee, Hyuk Sang Kwon, Dong Il Shin, Chee Ho Noh, Jung Min Lee, Jong Min Lee, Kun Ho Yoon, Bong Yun Cha, Kwang Woo Lee, Ho Young Son, Sung Koo Kang; J Korean Endocr Soc. 2003;18(4):433-438. Published online August 1, 2003

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Abstract PDF: An increased plasma aldosterone concentration, with suppressed plasma renin activity (PRA), is an abnormal finding in primary hyperaldosteronism. A suppressed PRA is caused by aldosterone- dependent sodium retention and extracellular volume expansion. A case of primary hyperaldosteronism, due to adenoma, with increased PRA, was observed. An adrenalectomy and intraoperative renal biopsy was performed. In our patient, histologically proven renal arteriosclerosis was the probable cause of the escape of the PRA from the suppression by an aldosterone-producing adenoma. Normal blood pressure was not attained after the adrenalectomy. However, the blood pressure was then controlled by small doses of antihypertensive drug before resection of the tumor. In this case, the patient was treated with spironolactone, but the blood pressure was not correctly controlled. After the adrenalectomy, the blood pressure was well controlled with smaller dose of calcium channel blockers. So, an early adrenalectomy may be beneficial as soon as the diagnosis of an aldosterone-producing adenoma is confirmed, even in patients with hypertensive nephrosclerosis.

The Effects of Aging on the Proliferation and Differentiation of Osteoblasts from Human Mesenchymal Stem Cells.: Ki Hyun Baek, Hyun Jung Tae, Ki Won Oh, Won Young Lee, Chung Kee Cho, Soon Yong Kwon, Moo Il Kang, Bong Yun Cha, Kwang Woo Lee, Ho Young Son, Sung Koo Kang, Choon Choo Kim; J Korean Endocr Soc. 2003;18(3):296-305. Published online June 1, 2003

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Abstract PDF: BACKGROUND
Osteoblasts originate from osteoprogenitor cells in bone marrow stroma, termed mesenchymal stem cells (MSCs) or bone marrow stromal cells. Each MSC forms colonies (colony forming units-fibroblasts [CFU-Fs]) when cultured ex vivo. There are some reports about the age-related changes of the number and osteogenic potential of osteoprogenitor cells, but any relationship has not been clearly established in humans. In this study, we counted MSCs using CFU-Fs count and examined the proliferative capacity and differentiation potential of osteoprogenitor cells. Finally, we analyzed how these parameters varied with donor age. METHODS: Bone marrow was obtained from the iliac crest of young (n=6, 27.2+/-8.6 years old) and old (n=10, 57.4+/-6.7 years old) healthy donors. Mononuclear cells, including MSCs, were isolated and cultured in osteogenic medium. In primary culture, we compared the colony-forming efficiency of MSCs between the two groups and determined the matrix calcification. When primary culture showed near confluence, the cells were subcultured. Alkaline phosphatase activity, osteocalcinexpression by RT-PCR and proliferative potential by MTT assay were examined by the time course of secondary culture. RESULTS: At the 15th day of primary culture, the mean number of CFU-Fs was significantly higher in the younger donors (young: 148.3+/-28.9, old: 54.3+/-9.1, p=0.02) and the mean size of CFU-Fs was also larger in the younger donors than the older donors. However, matrix calcification was not different between the two groups (young: 103.6+/-50.6, old: 114.0+/-56.5, p=NS). In secondary culture, alkaline phosphatase activities were significantly lower in the older donors. The younger donors showed peak alkaline phosphatase activity at day 10, while the older donors didn't showed a remarkable peak (young: 935.5+/-115.0U/mg, old: 578.4+/-115.7U/mg, p<0.05). Total cell number as a proliferative index increased progressively during the secondary culture and a significantly greater cell number was noted in the younger donors. Osteocalcin expression was generally upregulated in the younger donors, but this was not statistically significant. CONCLUSION: Our study shows that the number of osteoprogenitor cells is decreased during aging and that the proliferative capacity and differentiation potential of osteoprogenitor cells seem to be reduced during aging.

A Case of Acute Rhabdomyolysis as a first Manifestation of Primary Hypothyroidism.: Jung Min Lee, Hyun Shik Son, Hye Jung Lee, Sook Hee Hong, Jong Min Lee, Bong Yun Cha, Kwang Woo Lee, Ho Young Son, Sung Koo Kang; J Korean Endocr Soc. 2003;18(1):79-84. Published online February 1, 2003

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Abstract PDF: Various symptoms, such as bradycardia, hypotension, fatigue, constipation, myalgia, muscle weakness, delayed tendon reflex, and so forth, presented in hypothyroidism. Of these symptoms, muscle weakness, myalgia, and delayed tendon reflex are common features of hypothyroid myopathy. Acute rhabdomyolysis, a very severe form of myopathy, but is a rare manifestation of primary hypothyrodism. A 29-year-old man developed acute rhabdomyolysis, associated with primary hypothyroidism as a first manifestation. After thyroxine replacement therapy, he exhibited some improvement in muscle weakness and in non-pitting edema. We report a case of primary hypothyroidism presenting with spontaneous rhabdomyolysis as a first manifestation.

The Changes of Serum Growth Factors after Hematopoietic Stem Cell Transplantation: Impact on Bone Mineral Metabolism.: Ki Hyun Baek, Eun Sook Oh, Ki Won Oh, Won Young Lee, Hye Soo Kim, Soon Yong Kwon, Je Ho Han, Moo Il Kang, Bong Yun Cha, Kwang Woo Lee, Ho Young Son, Sung Koo Kang, Choon Choo Kim; J Korean Endocr Soc. 2002;17(5):664-674. Published online October 1, 2002

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Abstract PDF: BACKGROUND
A loss of bone mass is usually detected after a bone marrow transplantation (BMT), especially during the early post-transplant period. We recently reported that enhanced bone resorption following a BMT was related to both the steroid dose and the increase in IL-6. We also suggested damage to the marrow stromal microenvironment, by myoablation, partly explains the impaired bone formation following a BMT. It is well known that some growth factors play important role in bone growth and osteogenesis. However, the pathogenetic role of bone growth factors in post-BMT bone loss is unknown and data on the changes in the growth factors, in accordance with bone turnover markers and bone mineral density (BMD) changes are scarce. We investigated changes in bone growth factors such as IGF-I (Insulin-like growth factor-I), fibroblast growth factor-2 (FGF-2) and Macrophage colony stimulating factor (M-CSF), during the post-BMT period, and assessed whether the growth factor changes influenced the bone turnover and post-BMT bone loss. The present study is the first prospective study to describe the changes in bone growth factors following a BMT. METHODS: We prospectively investigated 110 patients undergoing a BMT, and analyzed 36 patients (32.4+/-1.3 years, 17 men and 19 women) whose BMDs were measured before, and 1 year after, the BMT. The serum biochemical markers of bone turnover were measured before, 1, 2, 3 and 4 weeks, 3 and 6 months, and 1 year, after the BMT. The serum FGF-2, IGF-I and M-CSF levels were measured before and 1 and 3 weeks, and 3 months after the BMT. The correlation between the changes of growth factors and various bone parameters was analyzed. RESULTS: The mean bone losses in the lumbar spine and total proximal femur, calculated as the percentage change from the baseline to the level at 1 year, were 5.2 (p<0.05) and 11.6% (p<0.01), respectively. The serum type I carboxyterminal telopeptide (ICTP), a bone resorption marker, increased progressively until 6 months after the BMT, but thereafter decreased, to the base value after 1 year. Serum osteocalcin, a bone formation marker, decreased progressively, until 3 weeks after the BMT but then increased transiently, and finally returned to the base level at 1 year. The serum IGF-I and FGF-2 also decreased progressively until 3 weeks and 1 week after the BMT, respectively, then increased to the base values at 3 months. The serum M-CSF increased briskly at 1 week post-BMT, then decreased to the base level. There were positive correlations between the percentage changes from the baseline proximal femur BMD and the IGF-I levels 3 weeks and 3 months (r=0.52, p<0.01, r=0.41, p<0.05) post BMT. A Significant correlation was found between the IGF-I and osteocalcin levels pre-BMT, and 3 weeks after the BMT. Another positive correlation was found between the M-CSF and the ICTP levels at 3 weeks post BMT (r=0.54, p<0.05). CONCLUSION: In conclusion, there were significant changes in the serum IGF-I, FGF-2 and M-CSF levels in the immediate post-BMT period, which were related to a decrease in bone formation and loss in the proximal femoral BMD during the year following the BMT

Renin-responsive Adrenal Adenoma with a Suspicious Abberant Adrenal Vein.: Ji Hyeon Ju, Woo Lee Jung, Jung Min Lee, Kun Ho Yoon, Bong Yun Cha, Ho Young Son, Dong Gu Kim, Eung Kook Kim, Byung Ki Choi; J Korean Endocr Soc. 2001;16(1):123-129. Published online February 1, 2001

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Abstract PDF: A renin- or angiotensin-II responsive aldosterone producing tumor is a rare cause of primary hyperaldosteronism. This tumor can be identified by tests that show that the aldosterone producing adrenal tumor is not fully autonomous. In other words partially it is responsible for the stimulation of aldosterone secretion that results aldosterone levels in an increase in serum in response to the upright posture and spironolactone treatment. Furthermore, the urinary 18-hydroxycortisol level is within the normal range. Because of different responses to surgical removal, the differential diagnosis of the causes of primary aldosteronism can't be overemphasized even for rare causes of primary aldosteronism such as unilateral nodular hyperplasia or a renin-responsible aldosterone producing tumor. We should consider renin or angiotensin-II responsive adrenal adenoma in the differential diagnosis of primary aldosteronism when biochemical data shows atypical results. Here we present the first case in Korea of a renin-responsive aldosterone producing adrenal adenoma which was fully accessible and was successfully treated by surgical removal. Also, sampling for aldosterone secretion just above the insertion site in the left renal vein before surgery showed a suspiciously abberant left adrenal vein drainage into the IVC, This was very helpful information during adrenal vein ligation in laparoscopic adrenalectomy.

A Case of Intrathyroidal Parathyroid Adenoma Diagnosed by Fine-Needle Aspiration.: Hye Soo Kim, Eun Kyung Lee, Sung Ha Hwang, Myung Sook Kim, Eun Hee Lee, Jong Min Lee, Suk Young Kim, Bong Yun Cha, Kwang Woo Lee, Ho Young Son, Sung Koo Kang; J Korean Endocr Soc. 2000;15(4-5):614-621. Published online January 1, 2001

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Abstract PDF: Fine-needle aspiration can be successfully utilized in the preoperative localization of abnormal parathyroid tissue. Fine-needle aspirate immunostaining for parathyroid hormone (PTH) or chromogranin and thyroglobulin (Tg) with measurement of PTH and Tg levels in the needle washings (FNAB-PTH and FNAB-Tg) can differentiate an enlarged parathyroid tissue from other cervical masses, such as thyroid nodules and lymph nodes. Parathyroid mass can be successfully aspirated by guidance of ultrasonography or computed tomography. Thyroid nodules are the most frequent cause of reduced accuracy of the imaging studies, such as ultrasonography, computer-assisted tomography and scintigraphy. We report on a case of unsuspected intrathyroidal parathyroid adenoma coexisted with thyroid follicular adenoma presenting two thyroid nodules. After biochemical diagnosis of hyperparathyroidism, we could not localize the parathyroid lesion specifically with any imaging method. Through fine-needle aspiration of two thyroid nodules, we performed the immunostaining for chromogranin and thyroglobulin and the measurement of PTH and thyroglobulin levels in the aspirated materials. The results confirmed the right nodule to be thyroid lesion and the left nodule to be parathyroid lesion preoperatively.

The Effect of Hematopoietic Stem Cell Transplantation in the Origin and the Osteoblastic Differentiation of the Human Bone Marrow Stromal Cell.: Moo Il Kang, Seong Won Cho, Eun Sook Oh, Ki Hyun Baik, Won Young Lee, Ki Won Oh, Hye Soo Kim, Je Ho Han, Kun Ho Yoon, Bong Yun Cha, Kwang Woo Lee, Ho Young Son, Sung Koo Kang, Choon Choo Kim; J Korean Endocr Soc. 2000;15(4-5):571-581. Published online January 1, 2001

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Abstract PDF: BACKGROUND
Bone marrow transplantation is the treatment of choice for patients with certain- hematological malignancies, many of whom will survive many years thereafter. Bone disease is a potential longterm complication. But, little is known about the effects of bone marrow transplantation on bone. METHODS: In this study, bone marrow was obtained from healthy donor and transplant recipients. Then mononuclear cells including marrow stromal cells were isolated and cultured. At near confluence, bone marrow stromal cells were subcultured. Thereafter alkaline phosphatase activities of each group were measured by time course of secondary culture. We also analysed the origin of marrow stromal cells by the polymerase chain reaction using YNZ 22 minisatellite probe. RESULTS: l. Cells cultured in our system showed the characteristics of marrow stromal cells differentiated to osteoblasts. They were in fibroblast-like spindle shape and positive to alkaline pbosphatase histochemistry and Von Kossa histochemistry in secondary cultures. 2. The time required for the near confluence in the primary culture was 15 days and 22.9 days on the average in healthy donors and transplant recipients, respectively (p=0.003). 3. In secondary cultures, healthy donors and transplant recipients showed peak alkaline phosphatase activity at 10 days and 17 days, respectively (p=0.031). Alkaline phosphatase activity was lower in BMT recipients than in healthy donors during the whole period of secondary cultures. 4. In polymerase chain reaction analysis using YNZ 22 minisatellite probe, bone marrow stromal cells were of recipient origin. CONCLUSION: Recipient-derived bone marrow stromal cells may be damaged secondary to the effect of chemotherapy, glucocorticoid & total body irradiation which have given before bone marrow transplantation. So it may affect the differentiation of bone marrow stromal cells into the osteoblasts.

The Effect of Bone Marrow Transplantation on Bone Mineral Metabolism: 2 - Year Prospective Study.: Won Young Lee, Moo Il Kang, Eun Sook Oh, Ki Won Oh, Je Ho Han, Hyun Shik Son, Kun Ho Yoon, Bong Yun Cha, Kwang Woo Lee, Ho Young Son, Sung Koo Kang, Wan Sik Shin, Woo Sung Min, Choon Choo Kim; J Korean Endocr Soc. 2000;15(4-5):561-570. Published online January 1, 2001

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Abstract PDF: BACKGROUND
Loss of bone mass is usually detected after bone marrow transplantation (BMT), especially during the early post-transplant period. But little is known about the long-term effects of BMT on bone mineral metabolism. METHODS: We have investigated prospectively 12 patients undergoing BMT (4 autologous, 8 allogeneic) for hematologic diseases (8 leukemia, 3 SAA, 1 MDS). Serum concentrations of calcium, phosphorus, creatinine, gonadotropins, sex hormones and bone turnover markers (osteocalcin and ICTP) were measured. The samples were collected before BMT and 1, 2, 3, 4, and 12 weeks, 6 months and 1, 2 years thereafter. Bone mineral density (BMD) was measured with DEXA (Dual Energy X-ray Absorptiometry) before BMT, 1 year and 2 year after BMT. In patients with amenorrbea, hormone replacement therapy was started from around 1 year after BMT RESULTS: 1. The mean bone loss in the lumbar spine, calculated as the percent change from the baseline to the level at 1 year and 2 year was 7.3% and 1.9%, respectively. The mean bone loss in the total proximal femur from the baseline to the level at 1 year and 2 year was 8.0% and 8.3% respectively. 2. The serum ICTP increased progressively until four weeks after BMT. Thereafter, it decreased gradually to reach basal values after one year and thereafter no more change until 2 year. Serum osteocalcin decreased progressively until three weeks after BMT. After that, it increased and reached basal values after 3 months. Osteocalcin increased at 6 month transiently but thereafter, it decreased to the level of slightly above basal value at 2 year. 3. Patients who were treated with TBI or pateints with GVHD had a tendency of lower BMD at l year and 2 year after BMT than those of patients without TBI or GVHD. 4. Eight out of nine women went into a menopausal state immediately after BMT and remained amenorrhea, evidenced by high gonadotropins and low estradiol levels. In contrast to women, gonadotropins and testosterone levels were not changed significantly in men after BMT. CONCLUSION: The rapid impairment of bone formation and the increase in bone resorption, as shown by the biochemical markers in this study, might play a role in bone loss after BMT. The efficacy of HRT for the correction of hypogonadism and bone loss was evidenced by 2 year BMD which was much more increased compared to 1 year BMD, especially in vertebra.

The Nonthyroidal Illness Syndrome: Prognostic Value and Circulating Cytokines after Allogeneic Bone Marrow Transplantation.: Ki Won Oh, Moo Il Kang, Won Young Lee, Hyun Shik Son, Kun Ho Yoon, Bong Yun Cha, Kwang Woo Lee, Ho Young Son, Sung Koo Kang, Wan Sik Shin, Woo Sung Min, Choon Choo Kim, Byung Young Ahn, Hyung Sun Sohn; J Korean Endocr Soc. 2000;15(2):214-225. Published online January 1, 2001

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Abstract PDF: BACKGROUND
Alteration of thyroid hormone parameters are frequently observed in sick patients and commonly known as nonthyroidal illness syndrome(NTIS) or euthyroid sick syndrome(ESS). NTIS is seen in starvation, surgery, severe illness, and also bone marrow transplantation(BMT). The degree of reduction in thyroid hormone parameters correlated with the severity of NTIS and might predict the prognosis of underlying illness. Recently, particular attention is focused on the role of cytokines in developing the NTIS. This prospective study was designed to assess the relationship of serum thyroid hormone parameters and serum cytokine levels before and in the short-term follow-up after allogeneic BMT in order to predict patients outcome. METHODS: Included 80 patients that were mainly leukemia and severe aplastic anemia. Serum thyroid hormone parameters and serum cytokine levels were measured before and 7, 14, 21, 28 days and 3, and 6 months after BMT. RESULTS: Near-all patients experienced significant decrease of thyroid hormone levels and also significant increase of cytokine levels after BMT. After post-BMT 3 weeks, the serum cytokine levels were negatively correlated with the serum T3 and T4 levels, but not with the serum TSH levels. The patients treated with high-dose steroid or total-body irradiation tended to show lower levels of TSH and more delayed recovery compared to non-treated patients. The patients died after BMT represented generally lower levels of all thyroid hormone parameters than survival patients during entire follow-up period. CONCLUSION: Development of NTIS is associated with higher probability of fatal outcome after BMT and has prognostic relationship in this group of patients. Increased levels of cytokines, especially IL-6 and TNF-alpha, are often found in post-BMT NTIS patients and correlated with the changes in the levels of thyroid hormone parameters.

A Case of Oncogenic Osteomalacia Caused by Chondromyxoid Fibroma.: Ki Won Oh, Moo II Kang, Won Young Lee, Tae Kyu Lee, Jae Hyuck Chang, Jung Pil Suh, Bong Yun Cha, Kwang Woo Lee, Ho Young Son, Sung Koo Kang, Jeong Mi Park, Kyo Young Lee, Seung Koo Rhee, Young Kyun Woo; J Korean Endocr Soc. 1999;14(4):764-770. Published online January 1, 2001

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Abstract PDF: Oncogenic osteomalacia is a rare clinicopathological condition. The syndrome is characterized by hypophosphataemic osteomalacia with hyperphosphaturia, low plasma 1,25-dihydroxyvitamin D and normal plasma calcaemia and parathyroid hormone, associated with a tumor, generally of mesenchymal origin. Complete excision of the tumour results in cure of the whole syndrome. Recently we experienced 56-year-old woman with oncogenic osteomalacia caused by a chondromyxoid fibroma of the left foot. We report this case with the review of literatures.

Changes of Glucose Tolerance in Acromegaly Patients with 24 Hour Continuous Subcutaneous Infusion of Octreotide.: Ki Hyun Baik, Kun Ho Yoon, Jeong Min Lee, Chang Wook Kim, Paek Sun Kim, Sang Aha Jang, Soon Jib Yoo, Hyun Sik Son, Moo II Kang, Bong Yun Cha, Kwang Woo Lee, Ho Young Son, Sung Koo Kang; J Korean Endocr Soc. 1999;14(4):636-644. Published online January 1, 2001

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Abstract PDF: BACKGROUND
An important metabolic feature of acromegaly is a reduced action of insulin on hepatic gluconeogenesis and peripheral glucose disposal which mediated by growth hormone hypersecretion. Octreotide, a synthetic octapeptide somatostatin analogue exerts complex effects on hormonal and metabolic regulations affecting glucose homeostasis. This study was designed to ascertain the shorterm effect of octreotide on glucose tolerance in acromegaly. METHODS: 10 patients (five men and five women, age 47.9+/-11.8) were injected subcutaneously with octreotide, 100 micrograms for 24 hours. Patients were assessed with respect to growth hormone, glucose, and insulin response to a standard 100 g oral glucose tolerance test (OGTT) before and during the last 2 hour of octreotide infusion. RESULTS: During the therapy, there was significant decrease in mean blood glucose response to OGTT (678.4+/-51.9 vs 581.9+/-47.3 mg/dL/2hr: mean areas under the glucose curve, p=0.01) and mean serum insulin response to oral glucose load was significantly reduced in all patients (339.2+/-106.2 vs 256.7+/-111.3 U/mL/2hr: mean areas under the insulin curve, p=0.01). Using glucose tolerance test criteria three patients of 10 had normal glucose tolerance, four and three had impaired glucose tolerance and diabetes, respectively, at base line. While on octreotide these composition was changed to six patients of NGT, three of IGT and one diabetes. CONCLUSION: We conclude that insulin resistance mediated by GH hypersecretion was improved by shorterm octreotide treatment.

A Case of Thyroid Abscsess in Subacute Thyroiditis During Glucocorticoid Therapy.: Soon Jib Yoo, Bong Yun Cha, Kwang Woo Lee, Ho Young Son, Sung Koo Kang, Young Hwan Kim, Mi Ja Kang, Seung Hyeon Ko, Ki Uk Chang; J Korean Endocr Soc. 1997;12(3):468-472. Published online January 1, 2001

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Abstract PDF: Subacute thyroiditis is a frequent benign thyroid disease associated with previous viral upper respiratory tract infection. Known complications of this disease are long-standing subclinical hypothyroidism, persistent anterior neck pain and rarely Graves disease. In general, thyroid abscess is an uncommon disease because of anatomic isolation of the gland and its rich system of drainage for blood and lymph. Especially, development of thyroid abscess in subacute thyroiditis is extremely rare phenomenan, but significant bad outcomes can be resulted. Its clinical BACKGROUND containes immune-suppressed state, anatomic defect, presence of underlying other thyroid disease and of non-thyroidal infectious foci. We experienced a case of subacute thyroiditis complicated with streptococcal thyroid abscess during glucocorticoid therapy. The patient was a 19-year-old female who was admitted due to anterior neck pain for 1 month. Typical subacute thyroiditis was suggested from initial laboratory findings including CBC, erythrocyte sedimentation rate, serum T3, T4, TSH levels, thyroid scan & thyroid uptake. But during oral prednisolone therapy, unexpected bacterial thyroid abscess was developed. We report this unusual case with review of literatures.

A Case of Partial Hypopituitarism and Central Diabetes Insipidus Developed after Tuberculous Meningitis.: Soon Jib Yoo, Kun Ho Yoon, Moo Il Kang, Bong Yun Cha, Kwang Woo Lee, Ho Young Son, Sung Koo Kang, Myung Hee Chung, Yoon Shin, Hyuk Sang Kwon, Seung Won Jin; J Korean Endocr Soc. 1997;12(2):308-314. Published online January 1, 2001

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Abstract PDF: Complications related to tuberculous menngitis (TBM) is frequently encountered in medical field during, just after treatment and long time later. Hypothalamo-pituitary dysfunctions such as diabetes incipidus, dwarfism, hypogonadism, growth failure, and hypopituitarism are one of rare complication secondary to TBM and of which obesity with hypogonadism is most commonly documented. Several pathologic mechanics like a granuloma in hypothalamus, or pituitary stalk, organization and progressive scarring of the purulent exudate in the basal cistern or progressive obliterative endarteritis that supplying the hypothalamo-hypophyseal system is well-defined in hypothalamopituitary dysfunction in neurotuberculosis. We recently experienced a diabetic patient with short stature and sexual infantilism who shows polyuria and polydipsia. Detailed endocrinological evaluation showed partial hypopituitarism and central diabetes incipidus secondary to tuberculous meningitis. Polyuria and polydipsia was improved with dDAVP and height increased 5 cm for 11 month with HGH, libido increased with oxadrolone but his extemal sexual characteristics was not changed until now. We present this case with a review of literature.

A Case of Multiple Endocrine Neoplasia Type 1.: Soon Jib Yoo, Bong Yun Cha, Kwang Woo Lee, Ho Young Son, Sung Koo Kang, Jong Man Won, Young Seok Cho, Yong Jik Sung, Kyung Sub Song, Jin Young Yoo, Chul Woo Lee; J Korean Endocr Soc. 1997;12(1):111-119. Published online January 1, 2001

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Abstract PDF: Multiple endocrine neoplasia type 1 (MEN 1) is the association of neoplastic transformation of parathyroid, pituitary, and pancreatic islet cells. This syndrome is inherited as an autosomal dominant trait. A 38-year-old woman presented with general weakness and mental changes. She had experienced same symptoms 7 years ago, after then her weight gradually increased. Insulinoma was suspected by markedly decreased blood glucose level (20mg/dL) and the increased insulin/glucose ratio (0.43) that sampled in emergency room at the time of mental change. Unusually large pancreatic tail mass and Lt, adrenal gland mass were detected by abdominal CT. Percutaneous transhepatic portal vein catheterization with insulin sampling showed sudden step up of insulin/glucose ratio at the middle portion of pancreas. Measuring of basal pituitary hormones as a screening procedure of MEN showed increased basal prolactin level. Combined pituitary stimulation test showed blunted response of prolactin to TRH and sellar magnetic resonance imaging showed intrasellar mass. Thyroid nodule was palpated on her anterior neck. Thyroid scintigram showed cold nodule, and there was no lymphadenopathy around the nodule by the thyroid sonogram. Fine needle aspiration cytology showed benign hyperplastic follicular cells only. Serum ionized calcium and parathyroid hormone level were normal. Under the impression of MEN type I, the distal pancreatectomy, splenectomy, Lt. thyroid lobectomy and Lt. adrenalectomy was performed at the same time. Histologic examination of the surgically removed tissues revealed pancreas islet cell tumor, adrenal cortical adenoma and thyroid adenoma. Transient hyperglycemia was developed after surgical intervention, but thereafter she never felt any symptoms of hypoglycemia till now and her blood glucose showed completely normal level with oral glucose tolerance tests. We present this case with a review of literature.

A Case of Cushing's syndrome due to Primary Pimary Pigmented Nodular Adrenal Dysplasia ( PPNAD ): A Case of Carney's Complex.: Soon Jib Yoo, Bong Yun Cha, Kwang Woo Lee, Ho Young Son, Sung Koo Kang, Youn Sik Kim, Jong Min Lee, Jong Man Won; J Korean Endocr Soc. 1997;12(1):90-98. Published online January 1, 2001

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Abstract PDF: Primary Pigmented Nodular Adrenal Dysplasia (PPNAD) is a rare cause of Cushing's syndrome in infants and young adults. The familial occurrence, it may be variably associated with a complex of other pathologic characteristics that manifests extraadrenal disorders (includes cardiac myxomas, lentigines, mammary myxoid lesions, testicular tumors, pituitary adenomas, and neuroectodermal tumors) was considered indicative of Carneys complex. This was based on the failure of cortisol suppression by high-dose dexamethasone, either normal or suppressed basal adrenocorticotropic hormone (ACTH) levels, and normal radiographic studies of the sellar turcica, and adrenals glands is almost normal or slightlg eulaged.. Bilateral adrenalectomy has thus the only effective means of cure. The disease may be a component of a rare, but potentially dangerous complex of abnormalities that follow an autosomal-dominant mode of inheritance. Recently we experienced a case of Carney's complex composed by Cushings syndrome due to PPNAD with familial purple colored lentigines on their lips and report it with reviews of the literatures.

A Case of Mediastinal parathyroid adenoma localized by technetium-99m sestamibi scanning.: Bong Yun Cha, Kwang Woo Lee, Ho Young Son, Sung Koo Kang, Ki Ho Song, Sung Hee Lee, Won Hee Han, Hyung Sun Sohn; J Korean Endocr Soc. 1996;11(2):227-232. Published online November 7, 2019

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Abstract PDF: We present a patient with primary hyperparathyroidism in whom preoperative Tc-99m sestarnibi scanning cleary demonstrated mediastinal parathyroid adenoma. After resectian of tumor through median sternotomy, he was restored to the normocalcemia. This case suggests that Tc-99m sestamibi scanning may be a useful method in the preoperative localization of mediastinal parathyroid adenoma.

A Case of Pituitary Feedback Adenoma Caused by Primary Hypothyroidism.: Soon Jib Yoo, Sang A Chang, Yoo Bae Ahn, Hyun Sik Son, Kun Ho Yoon, Moo Il Kang, Bong Yun Cha, Kwang Woo Lee, Ho Young Son, Sung Koo Kang, Myung Hee Chung; J Korean Endocr Soc. 1996;11(2):199-206. Published online November 7, 2019

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Abstract PDF: A 14-year-old girl presented with severe headache and grand mal seizure. A magnetic resonance imaging(MRI) of brain showed a pituitary mass(1.0X1.5X1.3cm) incidentally during seizure evaluation. On physical examination, nodular goiter was detected on her anterior neck. The hormone study showed markdly increased basal thyroid stimulating hormone(TSH) level compared to thyroid hormone level, hyperprolactinemia and decreased basal growth hormone level. TSH and prolactin showed exaggerated response to thyrotropin releasing hormone(TRH) and the growth hormone showed delayed and blunted response to insulin-induced hypoglycemia. With the results of thyroid autoantibody and thyroid scan, the diagnosis of Hashimoto's thyroiditis was possible. Thyroid hormone and anticonvulsant drug were started with close observation of clinical status under the impression of pituitary feedback adenoma caused by hypothyroidism. After 3 months replacement therapy of levothyroxine sodium, she achieved euthyroid state with disappearance of headache and nodular goiter. After continuous replacement therapy for 9 months more, the pituitary mass was successfully regressed on follow up MRI with normalization of basal prolactin level. Grand mal seizure was developed after withholding anticonvulsant drug even though continuous admmistration of thyroid hormone. Because of similarity among pituitary adenoma discovered incidentally, careful hormonal study and high index of suspicion should be maintained to achieve correct diagnosis in order to avoid unnecessary pituitary surgery in these patients.

Two Cases of Cryptococcosis in Patients with Cushing's Syndrome and Diabetes Mellitus.: Jong Kyu Lee, Hee Kyung Chun, Je Ho Han, Hyun Sik Son, Kun Ho Yoon, Moo Il Kang, Bong Yun Cha, Kwang Woo Lee, Ho Young Son, Sung Ku Kang; J Korean Endocr Soc. 1995;10(1):58-64. Published online November 6, 2019

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Abstract PDF: Although cryptococcosis complicated with steroid therapy is well described, cryptococcosis has been rarely reported in the presence of Cushing's syndrome characterized by endogenous steroid excess. We experienced two cases of cryptococcosis in patients with Cushing's syndrome and diabetes mellitus. We describe a case of cryptococcal meningitis complicatiog Cushing's syndrome, secondary to pituitary adenoma. And another case of cryptococcal pneumonia complicatiog Cushing's syndrome, secondary to bilateral nodular adrenal hyperplasia. Before Cryptococcosis, two patients were suffered from diabetes mellitus, and they have got both adrenalectomy.

A Case of Pheochromocytoma Diagnosed as Preeclampsia during Prenancy.: Bong Yun Cha, Ho Young Son, Soon Jip Yoo, Ki Hyun Baik, Myung Hoon Kim, Moo Il Kang, E Jin Choi, Kwang Woo Lee, Sung Koo Kang, Uk Kim, Jong Man Won, Jin Young Yoo; J Korean Endocr Soc. 1994;10(3):295-299. Published online November 6, 2019

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Abstract PDF: A case of a pregnant woman with an undiagnosed pheochromocytoma is presented. Gestational hypertension was developed at 33 weeks' gestation. Also she experienced intermittent chest discomfort, headache and irritability during those period. Normal vaginal delivery was successfully performed with close observation. Even though experiencing same symptoms for two years after delivery, she had been treated as neurosis. Uncatched pheochromocytoma was detected and the tumor was resected successfully. It seems to be that many cases of pheochromocytoma with pregnancy still go unrecognized because of close similarity between pheochromocytoma and toxemia. High index of suspicion should be maintained to achieve early diagnosis because antenatal diagnosis can lower the mortality in both mother and fetus.

An Acromegalci Patient with Marked Tumor Shrinkoge after Continuous Infusion of Octreotide.: Je Ho Han, Hyun Sik Son, Kun Ho Yoon, Bong Yun Cha, Kwang Woo Lee, Ho Young Son, Sung Ku Kang, Yoo Bae Ahn, Sang A Jang, Ki Ho Song, Soon Jip Yoo, Jong Min Lee; J Korean Endocr Soc. 1994;10(2):161-164. Published online November 6, 2019

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Abstract PDF: No abstract available.

A Case of Thyroid Hemiagenesis with Papillary Adenocarcinoma.: Je Ho Han, Bong Yun Cha, Ho Young Son, Yoo Bae Ahn, Kwang Woo Lee, Sung Koo Kang, Se Jeong Oh, Jong Soon Na, Sang Ah Jang, Moo Il Kang; J Korean Endocr Soc. 1994;9(4):385-389. Published online November 6, 2019

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Abstract PDF: Variation in the gross anatomy of the thyroid is relatively common. Although thyroid hemiagenesis is considered to be a rare congenital anomaly, its incidence is probably underestimated because the diagnosis is usually incidental.We present the case of a 26-year-old woman with right thyroid hemiagenesis associated with papillary adenocarcinoma. The diagnosis of hemiagenesis was established by isotope imaging, which showed hot nodule, thyroid ultrasonography and surgical exploration for proper management of a nodule in the left lobe of thyroid gland. As she was diagnosed to have papillary adenocarcinoma, total thyroidectomy was performed and at present she remains disease-free.

Expression of Epidermal Growth Factor Receptor mRNA by In Situ Hybridization in Normal and Abnormal Thyroid Tissue.: Hyun Sik Son, Kun Ho Yoon, Bong Yun Cha, Jong Min Lee, Kwang Woo Lee, Moo Il Kang, Ho Young Son, Sung Koo Kang, Se Jeong Oh, Jin Han Kang, An Hee Lee; J Korean Endocr Soc. 1994;9(4):337-343. Published online November 6, 2019

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Abstract PDF: Growth factors are polypeptide molecules that regulate cell growth and function by binding with high affinity to specific receptor molecules in the plasma membrane and stimulating receptor mediated action of intracellular signal transduction pathway.Epidermal growth factor(EGF) and their receptors(EGFR) regulate normal cellular growth, proliferation, and differentiation of various cells in vivo and in tissue cultures. And also may contribute directly to oncogenesis.Overexpression of EGFR and autocrine stimulation of growth involving this receptor system has been identified in several types of human neoplasia. There is evidence that the EGF and receptor system is involved in the regulation of follicular cell growth in the thyroid gland especially with immunohistochemical technic. But there was a challenge about the validity of previously performed immunohistochemical studies.In the study we investigated the relationship between EGFR mRNA expression and tumorigenesis by rapid in situ hybridization method. Formalin-fixed, paraffin embedded tissue sections of 10 normal, 17 nodular hyperplasia, 6 follicular adenoma, and 15 papillary cancer were examined. The results were as follows:1) EGFR mRNA positivity were 20%(2/10) in normal thyroid, 70%(12/17) in nodular hyperplasia, and 100% in follicular adenoma and papillary cancer.2) There was a significantly increased EGFR mRNA expression in papillary cancer compare to normal and nodular hyperplasia(p<0.05). But no difference was found with papillary cancer and follicular adenoma.3) There was a significantly increased EGFR mRNA expression in follicular adenoma compare to normal (p<0.05). But no difference was found with follicular adenoma and nodular hyperplasia. These results suggest that an overexpression of EGFR mRNA may play an important role in the tumorigenesis of thyroid tissue.

Role of GTP - binding Protein in Signal Transduction.: Bong Yun Cha; J Korean Endocr Soc. 1994;9(3):163-179. Published online November 6, 2019

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Abstract PDF: No abstract available.

A Case of Primary Hyperparathyroidism Associated with Proximal Renal Tubular Acidosis and Postoperative Hungry Bone Syndrome.: Je Ho Han, Kun Ho Yoon, Bong Yun Cha, Ho Young Son, Kwang Woo Lee, Hae Ok Jung, Chang Sup Kim, Moo Il Kang, Chul Soo Cho, Ho Yun Kim, Sung Koo Kang; J Korean Endocr Soc. 1994;9(2):141-149. Published online November 6, 2019

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Abstract PDF: Primary hyperparathyroidism is a generalezed disorder of calcium, phosphorus and bone metabolism due to an increased secretion of parathyroid hormone. Single parathyroid adenoma is the most common cause of primary hyperparathyroidism. Because parathyroid hormone has been proposed as an important inhibitor of renal bicarbonate reabsorption of proximal tubule, proximal renal tubular acidosis is not rare in primary hyperparaphyroidism. After parathyroid resection, significant hypocalcemia and hypophosphatemia requiring prolonged medical management may develop, termed hungery bone syndrome. We experienced a case of primary hyperparathyroidism associated with proximal renal tubular acidosis, and severe hungry bone syndrome after resection of the adenoma of parathyroid gland.

Effect of cilostazol on diabetic peripheral vascular disease.: Kun Ho Yoon, Je Ho Han, Hyuk Ho Kwon, Bong Yun Cha, Kwang Woo Lee, Ho Young Son, Sung Ku Kang, Yong Seong Kim, Hyun Sang Oh, Soon Hyun Shinn; J Korean Endocr Soc. 1993;8(1):78-87. Published online January 1, 2001

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Abstract PDF: No abstract available.

Short-term follow-up of 10 mCi fixed-dose to calculated-dose 131I therapy for Graves' hyperthyroidism.: Kwang Woo Lee, Hyun Shik Son, Chae Ho Han, Soon Jip Yoo, Kun Ho Yoon, Moo Il Kang, Kwan Soo Hong, Bong Yun Cha, Ho Young Son, Sung Ku Kang; J Korean Endocr Soc. 1992;7(4):358-363. Published online January 1, 2001

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Abstract PDF: No abstract available.

Analysis of HLA-DQA1 genotype in Korea autoimmune thyroid disease and IDDM patients.: Moo Il Kang, Je Ho Han, Soon Jip Yoo, Jong Min Lee, Hyun Sik Son, Kun He Yoon, Bong Yun Cha, Kwang Woo Lee, Ho Young Son, Sung Ku Kang, Choon Choo Kim, Dong Jip Kim; J Korean Endocr Soc. 1992;7(4):320-330. Published online January 1, 2001

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Abstract PDF: No abstract available.

POEMS syndrome.: Moo Il Kang, Kun Ho Yoon, Kwan Su Hong, Bong Yun Cha, Kwang Woo Lee, Ho Young Son, Sung Ku Kang; J Korean Endocr Soc. 1991;6(1):95-96. Published online January 1, 2001

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Abstract PDF: No abstract available.

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