Endocrinology and Metabolism

Suk Chon (Chon S)

18 Articles

Diabetes, obesity and metabolism
Efficacy of Gemigliptin Add-on to Dapagliflozin and Metformin in Type 2 Diabetes Patients: A Randomized, Double-Blind, Placebo-Controlled Study (SOLUTION): Byung Wan Lee, KyungWan Min, Eun-Gyoung Hong, Bon Jeong Ku, Jun Goo Kang, Suk Chon, Won-Young Lee, Mi Kyoung Park, Jae Hyeon Kim, Sang Yong Kim, Keeho Song, Soon Jib Yoo; Endocrinol Metab. 2023;38(3):328-337. Published online June 28, 2023; DOI: https://doi.org/10.3803/EnM.2023.1688

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Abstract PDF Supplementary Material PubReader ePub: Background
This study evaluated the efficacy and safety of add-on gemigliptin in patients with type 2 diabetes mellitus (T2DM) who had inadequate glycemic control with metformin and dapagliflozin.
Methods
In this randomized, placebo-controlled, parallel-group, double-blind, phase III study, 315 patients were randomized to receive either gemigliptin 50 mg (n=159) or placebo (n=156) with metformin and dapagliflozin for 24 weeks. After the 24-week treatment, patients who received the placebo were switched to gemigliptin, and all patients were treated with gemigliptin for an additional 28 weeks.
Results
The baseline characteristics were similar between the two groups, except for body mass index. At week 24, the least squares mean difference (standard error) in hemoglobin A1c (HbA1c) changes was –0.66% (0.07) with a 95% confidence interval of –0.80% to –0.52%, demonstrating superior HbA1c reduction in the gemigliptin group. After week 24, the HbA1c level significantly decreased in the placebo group as gemigliptin was administered, whereas the efficacy of HbA1c reduction was maintained up to week 52 in the gemigliptin group. The safety profiles were similar: the incidence rates of treatment-emergent adverse events up to week 24 were 27.67% and 29.22% in the gemigliptin and placebo groups, respectively. The safety profiles after week 24 were similar to those up to week 24 in both groups, and no new safety findings, including hypoglycemia, were noted.
Conclusion
Add-on gemigliptin was well tolerated, providing comparable safety profiles and superior efficacy in glycemic control over placebo for long-term use in patients with T2DM who had poor glycemic control with metformin and dapagliflozin.

Adrenal gland
Acromegaly due to a Macroinvasive Plurihormonal Pituitary Adenoma and a Rectal Carcinoid Tumor: Sang Ouk Chin, Jin-Kyung Hwang, Sang Youl Rhee, Suk Chon, Seungjoon Oh, Misu Lee, Natalia S. Pellegata, Sung-Woon Kim; Endocrinol Metab. 2015;30(3):389-394. Published online January 5, 2015; DOI: https://doi.org/10.3803/EnM.2015.30.3.389

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A macroinvasive pituitary adenoma with plurihormonality usually causes acromegaly and hyperprolactinemia, and also accompanies with neurologic symptoms such as visual disturbances. However, its concurrent presentation with a rectal carcinoid tumor is rarely observed. This study reports the history, biochemical, colonoscopic and immunohistochemical results of a 48-year-old female with acromegaly and hyperprolactinemia. Despite the large size and invasive nature of the pituitary adenoma to adjacent anatomical structures, she did not complain of any neurologic symptoms such as visual disturbance or headache. Immunohistochemical staining of the surgical specimen from the pituitary adenoma revealed that the tumor cells were positive for growth hormone (GH), prolactin (PRL), and thyroid stimulating hormone (TSH). Staining for pituitary-specific transcription factor-1 (Pit-1) was shown to be strongly positive, which could have been possibly contributing to the plurihormonality of this adenoma. Colonoscopy found a rectal polyp that was identified to be a carcinoid tumor using immunohistochemical staining. A macroinvasive pituitary adenoma with concomitant rectal carcinoid tumor was secreting GH, PRL, and TSH, which were believed to be in association with over-expression of Pit-1. This is the first case report of double primary tumors comprising a plurihormonal pituitary macroadenoma and rectal carcinoid tumor.

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Clinical Characteristics and Management of Cosecreting Thyroid Stimulating Hormone or Prolactin Pituitary Growth Hormone Adenomas: A Case-Control Study
Caiyan Mo, Han Chen, Jian Xu, Ying Guo, Yao Wang, Zheng Li, Tao Tong, Songbai Gui, Liyong Zhong
Endocrine Practice.2024;[Epub] CrossRef
Growth Hormone Excess: Implications and Management
Suneela Dhaneshwar, Shrishti Shandily, Vatsalya Tiwari
Endocrine, Metabolic & Immune Disorders - Drug Targets.2023; 23(6): 748. CrossRef
Pleiomorphism plurihormonal Pit-1-positive macroadenoma with central hyperthyroidism: a rare case report and literature review
Guiliang Peng, Chuanhong Guo, Yangfan Lv, Dandan Li, Ling Zhou, Rufei Shen, Yong Chen, Xin Zheng, Zheng Sun, Hongting Zheng, Min Long
BMC Endocrine Disorders.2022;[Epub] CrossRef

Thyroid
Celiac Disease in a Predisposed Subject (HLA-DQ2.5) with Coexisting Graves' Disease: In Kyoung Hwang, Seon Hye Kim, Unjoo Lee, Sang Ouk Chin, Sang Youl Rhee, Seungjoon Oh, Jeong-Taek Woo, Sung-Woon Kim, Young Seol Kim, Suk Chon; Endocrinol Metab. 2015;30(1):105-109. Published online March 27, 2015; DOI: https://doi.org/10.3803/EnM.2015.30.1.105

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Celiac disease is an intestinal autoimmune disorder, triggered by ingestion of a gluten-containing diet in genetically susceptible individuals. The genetic predisposition is related to human leukocyte antigen (HLA) class II genes, especially HLA-DQ2-positive patients. The prevalence of celiac disease has been estimated to be ~1% in Europe and the USA, but it is rarer and/or underdiagnosed in Asia. We report a case of celiac disease in a predisposed patient, with a HLA-DQ2 heterodimer, and Graves' disease that was treated successfully with a gluten-free diet. A 47-year-old woman complained of persistent chronic diarrhea and weight loss over a 9 month period. Results of all serological tests and stool exams were negative. However, the patient was found to carry the HLA DQ2 heterodimer. Symptoms improved after a gluten-free diet was initiated. The patient has been followed and has suffered no recurrence of symptoms while on the gluten-free diet. An overall diagnosis of celiac disease was made in a genetically predisposed patient (HLA-DQ2 heterodimer) with Graves' disease.

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Celiac Disease Genetics, Pathogenesis, and Standard Therapy for Japanese Patients
Tasuku Tamai, Kenji Ihara
International Journal of Molecular Sciences.2023; 24(3): 2075. CrossRef
Underutilization of diagnostic assays for celiac disease in Korea
Rihwa Choi, Sang Gon Lee, Eun Hee Lee
Journal of Clinical Laboratory Analysis.2021;[Epub] CrossRef
Olmesartan is not associated with the risk of enteropathy: a Korean nationwide observational cohort study
Seng Chan You, Hojun Park, Dukyong Yoon, Sooyoung Park, Boyoung Joung, Rae Woong Park
The Korean Journal of Internal Medicine.2019; 34(1): 90. CrossRef
Prevalence of celiac disease in Asia: A systematic review and meta‐analysis
Prashant Singh, Shubhangi Arora, Alka Singh, Tor A Strand, Govind K Makharia
Journal of Gastroenterology and Hepatology.2016; 31(6): 1095. CrossRef

Thyroid
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; Endocrinol Metab. 2014;29(3):293-299. Published online September 25, 2014; DOI: https://doi.org/10.3803/EnM.2014.29.3.293

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Background

Fine-needle aspiration (FNA) of the thyroid is a widely accepted confirmatory test for thyroid cancer with high sensitivity and specificity. FNA is a simple procedure that is learned by many clinicians to enable accurate diagnosis of thyroid cancer. However, it is assumed that because the FNA test is a relatively simple procedure, its cytologic results are reliable regardless of the operator's experience. The aim of this study was to evaluate the differences in the diagnostic indices of FNA between operators with different levels of experience.

Methods

A total of 694 thyroid FNA specimens from 469 patients were reviewed, and were separated based on the experience of the clinicians who performed the procedure. One hundred and ninety were categorized in the experienced group, and 504 in the inexperienced group. All FNA results were then compared with histological data from surgically resected specimens, and the sample adequacy and diagnostic accuracy of the groups were compared.

Results

The age, gender, and nodule size and characteristics were similar in both groups. The sample adequacy rate was not significantly different between the experienced and nonexperienced groups (96.3% vs. 95.4%, P=0.682). However, the non-experienced group had a higher false-negative rate than the experienced group (6.4% vs. 17.2%, P=0.038), and the sensitivity of the FNA test also tended to be lower in the nonexperienced group (95.6% vs. 88.9%, P=0.065).

Conclusion

These results suggest that FNA operators who have less experience may miss cases of thyroid cancer by performing the procedure incorrectly. As such, the experience of the FNA operator should be considered when diagnosing thyroid cancer. When clinicians are being trained in FNA, more effort should be made to increase the accuracy of the procedure; therefore, enhanced teaching programs and/or a more detailed feedback system are recommended.

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The Role of MMP-9 and MMP-9 Inhibition in Different Types of Thyroid Carcinoma
Zhenshengnan Li, Jia Wei, Bowen Chen, Yaoqi Wang, Shuai Yang, Kehui Wu, Xianying Meng
Molecules.2023; 28(9): 3705. CrossRef
Telecytology rapid onsite evaluation, with real-time communication between cytopathologist, cytotechnologist, and proceduralist, offers better adequacy rates for lymph node, but not thyroid, fine-needle aspirations
Robert Post, Kelly Doxzon, Allison Goldberg
Journal of the American Society of Cytopathology.2023; 12(6): 407. CrossRef
Needle Biopsy Adequacy in the Era of Precision Medicine and Value-Based Health Care
Kenneth P. H. Pritzker, Heikki J. Nieminen
Archives of Pathology & Laboratory Medicine.2019; 143(11): 1399. CrossRef
The expression profile of integrin receptors and osteopontin in thyroid malignancies varies depending on the tumor progression rate and presence of BRAF V600E mutation
Galina Chernaya, Nina Mikhno, Tatiana Khabalova, Svetlana Svyatchenko, Lyudmila Mostovich, Sergey Shevchenko, Lyudmila Gulyaeva
Surgical Oncology.2018; 27(4): 702. CrossRef
Can thyroid surgery be decided based on ultrasonographic findings, irrespective of cytopathological findings? Five-year retrospective study in a district general hospital
A.A. Elsayed, C. Murdoch, S. Murray, K. Bashir
Clinical Radiology.2017; 72(2): 170. CrossRef
Efficacy of ultrasound‐guided fine‐needle aspiration performed by surgeons newly trained in thyroid ultrasound
Agnaldo J. Graciano, Carlos A. Fischer, Carlos T. Chone, Giuliano S. Bublitz, Marina Sonagli, Cezar A. Rodrigues Filho
Head & Neck.2017; 39(3): 439. CrossRef
Usefulness of NRAS codon 61 mutation analysis and core needle biopsy for the diagnosis of thyroid nodules previously diagnosed as atypia of undetermined significance
Eun Kyung Jang, Won Gu Kim, Eui Young Kim, Hyemi Kwon, Yun Mi Choi, Min Ji Jeon, Jung Hwan Baek, Jeong Hyun Lee, Tae Yong Kim, Young Kee Shong, Jene Choi, Dong Eun Song, Won Bae Kim
Endocrine.2016; 52(2): 305. CrossRef
Articles in 'Endocrinology and Metabolism' in 2014
Won-Young Lee
Endocrinology and Metabolism.2015; 30(1): 47. CrossRef
Carcinosarcoma of the Thyroid Gland
Mehmet Fatih Ekici, Cengiz Kocak, Zülfü Bayhan, Sezgin Zeren, Faik Yaylak, Mehmet Hüseyin Metineren, Fatma Emel Kocak
Case Reports in Surgery.2015; 2015: 1. CrossRef
Letter: Insufficient Experience in Thyroid Fine-Needle Aspiration Leads to Misdiagnosis of Thyroid Cancer (Endocrinol Metab2014;29:293-9, Jung Il Son et al.)
Hyon-Seung Yi, Sihoon Lee
Endocrinology and Metabolism.2014; 29(4): 590. CrossRef
Response: Insufficient Experience in Thyroid Fine-Needle Aspiration Leads to Misdiagnosis of Thyroid Cancer (Endocrinol Metab2014;29:293-9, Jung Il Son et al.)
Jung Il Son, Jeong-taek Woo
Endocrinology and Metabolism.2014; 29(4): 592. CrossRef

A Case of Primary Adrenal Insufficiency in a Patient with Acquired Immunodeficiency Syndrome.: Jae Ho Choi, Suk Chon, Yu Chul Hwang, Jun Seong Son, Seung Joon Oh, Kyu Jeung Ahn, Ho Yeon Chung, Jeong Taek Woo, Sung Woon Kim, Jin Woo Kim, Young Seol Kim, In Kyung Jeong; Endocrinol Metab. 2011;26(3):253-257. Published online September 1, 2011; DOI: https://doi.org/10.3803/EnM.2011.26.3.253

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Abstract PDF

The adrenal gland is the most commonly involved endocrine organ in patients infected with the human immunodeficiency virus (HIV). Adrenal function abnormality is more common in HIV patients than in the general population. It is important to recognize the condition of adrenal insufficiency, as this adrenal disorder may prove fatal if left untreated. Herein, we report a case of primary adrenal insufficiency in a 37-year-old male patient with acquired immunodeficiency syndrome. The patient complained of fever, general weakness, and fatigue. Impaired adrenal function was noted in the rapid ACTH stimulation test. After steroid supplementation, the patient's symptoms were improved. Therefore, HIV care physicians should ascertain adrenal dysfunction in HIV patients when they complain of fever and general weakness.

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A Case Report of Adrenal Insufficiency Treated with Korean Medicine
Young-ji Kim, Jung-yeon Kwon, Ho-yeon Go, Kyung-hwan Kong
The Journal of Internal Korean Medicine.2017; 38(5): 583. CrossRef

A Family Presenting with Catastrophic Features due to Pheochromocytoma Associated with Multiple Endocrine Neoplasia 2A.: Yun Jung Lee, Suk Chon, Sang Ho Lee, Tae Won Lee, Chun Gyoo Ihm, Tae June Noh, Seungjoon Oh, Jeong Taek Woo, Sung Woon Kim, Jin Woo Kim, Young Seol Kim; Endocrinol Metab. 2010;25(2):135-141. Published online June 1, 2010; DOI: https://doi.org/10.3803/EnM.2010.25.2.135

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Abstract PDF: Multiple endocrine neoplasia 2A (MEN 2A) is an autosomal dominant disease that consists of medullary thyroid carcinoma (MTC), pheochromocytoma and parathyroid hyperplasia. The activation of germ-line mutations in the RET proto-oncogene are responsible for MEN 2A. We describe here a rare case of MEN 2A in a patient who presented with an acute catecholamine-induced cardiomyopathy with cardiogenic shock and acute renal failure. The patient was diagnosed with pheochromocytoma and MTC associated with MEN 2A, which was confirmed by the detection of a RET proto-oncogene mutation at exon 11 on codon 634 (Cys634Arg). During familial screening, the patient's younger sister was found to have a benign thyroid nodule. Re-evaluation of this thyroid nodule revealed MTC with the same gene mutation. We also provide a review of the relevant literature.

A Case of Retroperitoneal Paraganglioma Manifested as Intractable Constipation with Paralytic Ileus and Aggravated Hyperglycemia.: Seung Joon Hwang, Mi kwang Kwon, Suk Chon; J Korean Endocr Soc. 2008;23(6):450-455. Published online December 1, 2008; DOI: https://doi.org/10.3803/jkes.2008.23.6.450

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Abstract PDF: Paragangliomas are extra-adrenal pheochromocytomas that arise from specialized neural crest cells. They are distributed anywhere from the upper neck to the pelvic floor, and they are classified on the basis of their anatomic origin. Functioning paragangliomas can cause the same clinical manifestations as pheochromocytoma, such as hypertension, diabetes mellitus, hyperadrenergic spells and so on. We experienced a retroperitoneal paraganglioma that was found in 66 year-old male who suffered from intractable constipation, and his constipation was caused by paralytic ileus and uncontrolled hyperglycemia. After he was diagnosed, removal of the paraganglioma was done and his clinical symptoms and sustained hyperglycemia were successfully resolved.

A Case of Hyalinizing Trabecular Tumor of the Thyroid Gland Misdiagnosed as Medullary Carcinoma at Cytologic Examination.: Jae Joon Han, Yun Jung Lee, Moon Chan Choi, Mikwang Kwon, Suk Chon, Juhie Lee; J Korean Endocr Soc. 2008;23(5):327-331. Published online October 1, 2008; DOI: https://doi.org/10.3803/jkes.2008.23.5.327

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Abstract PDF: A hyalinizing trabecular tumor (HTT) is a rare benign thyroid tumor that can present as a solitary thyroid nodule, a prominent nodule in a multinodular goiter, or as an incidental finding within a thyroidectomy specimen. The clinical importance of this entity is that it is frequently misdiagnosed as papillary carcinoma or medullary carcinoma on fine-needle aspiration cytology or histopathologic examination. The cytology of HTT is characterized by hypercellularity, nuclear grooves, nuclear pseudoinclusions, and powdery chromatin of the tumor cells, which is frequently seen in papillary carcinomas. The histologic findings of the tumor show polygonal and spindle cells arranged in a trabecular growth pattern with the presence of a variable hyalinized stroma. Calcitonin and other neuroendocrine markers can be used to differentiate HTT from medullary carcinoma. MIB-1, galectin-3, or other cytokeratin markers help to exclude papillary carcinoma. We report a patient with a thyroid tumor misdiagnosed as a medullary carcinoma on fine-needle aspiration and finally diagnosed as HTT after total thyroidectomy and immunohistochemical examination.

A Case of Type I Osteogenesis Imperfecta Differentially Diagnosed as a Cause of a Spinal Compression Fracture.: Sang Youl Rhee, Soo Young Moon, Suk Chon, In Kyung Jeong, Seungjoon Oh, Kyu Jeung Ahn, Ho Yeon Chung, Jeong Taek Woo, Sung Woon Kim, Young Seol Kim, Jin Woo Kim; J Korean Endocr Soc. 2007;22(6):446-452. Published online December 1, 2007; DOI: https://doi.org/10.3803/jkes.2007.22.6.446

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Abstract PDF: Osteogenesis imperfecta (OI) is a genetic disease that is caused by a synthetic anomaly of type I collagen. It is characterized by such features as low bone density, multiple fractures, bone deformities and chronic bone pain. According to the hereditary pattern and degree of phenotypical expression, it also has various extraskeletal manifestations such as blue sclera, hearing deformities and dentinogenesis imperfecta. Recently, an expanded seven subgroup classification of OI has been suggested by means of its clinical severity and mutational characteristics. However, most of the OI cases reported in Korea have been classified as type II or III that can be diagnosed easily and present with severe clinical manifestations. Only rare type I OI cases have been currently reported in Korea. Herein, we report a case of type I OI that was differentially diagnosed as a cause of a spinal compression fracture.

A Case of Osteomalacia Caused by Severe Vitamin D Deficiency.: Seok Yeon Kim, Sang Youl Rhee, Soo Young Moon, Suk Chon, In Kyung Jeong, Seungjoon Oh, Kyu Jeung Ahn, Deog Yoon Kim, Ho Yeon Chung, Sung Woon Kim, Jin Woo Kim, Young Seol Kim, Jeong Taek Woo; J Korean Endocr Soc. 2007;22(1):55-61. Published online February 1, 2007; DOI: https://doi.org/10.3803/jkes.2007.22.1.55

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Abstract PDF

Vitamin D is a kind of hormone that can be synthesized in the skin or it is supplied in the diet it is involved in a central role in bone and calcium homeostasis in vivo. Metabolic bone diseases such as rickets in children and osteomalacia in adults can also be caused by deficiency or metabolic defects in the vitamin D hormone related system. However, there has been a lack of generalized epidemiologic studies about the vitamin D deficiency status in Koreans. We recently experienced a case of osteomalacia caused by severe vitamin D deficiency. These kinds of case have not been reported elsewhere in Korea for the last twenty years.

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A Case of Nutritional Osteomalacia in Young Adult Male
Choong-Kyun Noh, Min-Jeong Lee, Bu Kyung Kim, Yoon-Sok Chung
Journal of Bone Metabolism.2013; 20(1): 51. CrossRef

A Case of Cushing's Disease due to Pituitary Microadenoma Combined with Primary Empty Sella Syndrome.: Yun Jung Lee, Sangyoul Rhee, Suk Chon, Seungjoon Oh, Jeong Taek Woo, Sung Woon Kim, Jin Woo Kim, Young Seol Kim, Byung Wook Lee, Jung Won Jeon; J Korean Endocr Soc. 2006;21(6):567-571. Published online December 1, 2006; DOI: https://doi.org/10.3803/jkes.2006.21.6.567

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Abstract PDF: An empty sella is defined as a sella which, regardless of its size, is completely or partly filled with cerebrospinal fluid. The endocrine function of primary empty sella syndrome is usually normal, but sometimes this syndrome is associated with complete or partial pituitary insufficiency and rarely hypersecretion of pituitary hormone. Primary empty sella syndrome combined with Cushing's disease has rarely been reported. A 45-years-old woman presented with cushingoid feature. Her urinary cortisol and 17-hydroxycorticosteroid excretion were increased. The results of endocrine function testing were suggestive of Cushing's disease. Sella MRI showed of partially empty sella and pituitary microadenoma. The pituitary microadenoma was removed by the trans-sphenoidal approach. We report here on this case together with a review of the literature.

Clinical Usefulness of Glucose Testing from the Forearm in Diabetic Patients.: Sang Wook Lee, Suk Chon, Seungjoon Oh, Jeong taek Woo, Sung Woon Kim, Jin Woo Kim, Young Seol Kim, Jeong Ryung Paeng, Gwanpyo Koh, Hak Hyun Nam; J Korean Endocr Soc. 2006;21(4):281-289. Published online August 1, 2006; DOI: https://doi.org/10.3803/jkes.2006.21.4.281

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Abstract PDF

BACKGROUND
Self monitoring of blood glucose plays an important role in the management of diabetes. However, traditional finger prick testing causes pain and so compliance with self monitoring of blood glucose is usually poor. Using an alternative site for sampling may reduce the level of pain and be beneficial for improving the compliance of diabetic patients. We evaluated the accuracy and acceptability of blood glucose testing from the forearm by analyzing the performance of the CareSens(R) (i-Sens, Inc. Korea) device for diabetic patients. METHODS: We measured the glucose level at the forearm by use of CareLance(R) (vaccum assisted lancing device) and also at the finger tip simultaneously by use of the CareSens(R) device at fasting and postprandial 2 hours, respectively. At the same time, the glucose levels of venous samples were checked by the laboratory method (BIOSEN 5030, EKF, Germany) and compared with those glucose level measured by the CareSens(R) device. We also checked the ease of use of the CareLance(R) and the associated pain of the patients by means of a visual analogue scale (VAS) at the time of blood sampling. RESULTS: The glucose level obtained from the forearm and finger tip correlated well with that from the laboratory method, respectively. Error grid analysis showed that 100% of the measurements were clinically acceptable; forearm blood glucose testing by use of CareLance(R) was less painful and it was as easy to use as the finger prick (P < 0.05 and P = 0.04, respectively). CONCLUSION: Forearm testing is an acceptable alternative to finger prick testing for measuring blood glucose in diabetic patients.

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Accuracy Evaluation of the Alternative Site Blood Glucose Test Using Error Grid
Kyung-Soon Park, Eun-Jong Cha
Journal of Biomedical Engineering Research.2011; 32(1): 25. CrossRef

A Case of Malignant Insulinoma Metastasized to Liver after Partial Pancreatectomy due to Insulinoma 10 Years before.: Yang Il Kang, Byung Hyuk Yang, Suk Chon, Seungjoon Oh, Jeong Taek Woo, Sung Woon Kim, Jin Woo Kim, Young Seol Kim, Ju Hie Lee, Kwanpyo Koh; J Korean Endocr Soc. 2006;21(1):68-73. Published online February 1, 2006; DOI: https://doi.org/10.3803/jkes.2006.21.1.68

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Abstract PDF: Malignant insulinomas are very rare endocrine tumours with a variable clinical course. Here, a case of a malignant insulinoma, resected from the tail of the pancreas 10 years previously, which was found to have hepatic metastasis, is reported. A pancreatic mass, without evidence of metastasis, has been found using an abdominal CT scan and intra-operative ultrasonography 10 years previously. Recently, the patient has suffered from dizziness, sweating and an altered mentality. Hyperinsulinemia was diagnosed from the biochemical laboratory finding. An abdominal CT scan and intra-operative abdominal sonography showed multiple hepatic metastasis, without local recurrence in pancreas. Therefore, a partial hepatic segmentectomy was performed. Immunohistochemical staining of the postoperative specimen was strongly positive for insulin. The postoperative biochemical response was normalized, and the patient experienced no further hypoglycemic symptom.

A Case Of Transient Hyporeninemic Hypoaldosteronism After Unilateral Adrenalrectomy for Aldosterone-Producing Adenoma.: Jungho Suh, Gwanpyo Koh, Keun Yong Park, Jongwook Hong, Suk Chon, Seungjoon Oh, Jeong taek Woo, Sung Woon Kim, Jin Woo Kim, Young Seol Kim; J Korean Endocr Soc. 2005;20(5):502-506. Published online October 1, 2005; DOI: https://doi.org/10.3803/jkes.2005.20.5.502

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Abstract PDF

Primary aldosteronism is due to either a unilateral adrenal adenoma or bilateral hyperplasia of the adrenal cortex in most cases. A unilateral adrenalectomy in hypertensive and hypokalemic patients, with a well-documented adrenal adenoma, is usually followed by the correction of hypokalemia in all subjects, with the cure of hypertension in 60 to 87% of patients. Here, a unique case, in which a unilateral adrenalectomy for the removal of an adrenal adenoma was followed by severe hyperkalemia, low levels of plasma renin activity and serum aldosterone, suggestive of chronic suppression of the renin-aldosterone axis, is reported. In a follow-up Lasix stimulation test on the 70th day after surgery, the suppression of the renin-aldosterone axis was resolved, indicating the suppression was transient. Patients undergoing a unilateral adrenalectomy for an aldosterone-producing adenoma should be closely followed up to avoid severe hyperkalemia.

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A Case of Persistent Hyperkalemia After Unilateral Adrenalectomy for Aldosterone-Producing Adenoma
Min Jae Yang, Seung Jin Han, Min Seok Lee, Eun Kyung Kim, Hae Jin Kim, Dae Jung Kim, Yoon Sok Chung, Tae Hee Lee, Jang Hee Kim, Kwan Woo Lee
Journal of Korean Endocrine Society.2009; 24(3): 201. CrossRef

A Case of Thyroid Abscess Associated with Lymphocytic Thyroidits.: Hyoun Jung Chin, Mi Kwang Kwon, Yeehuung Kim, Gwanpyo Koh, Keun Yong Park, Suk Chon, Seungjoon Oh, Jeong Taek Woo, Sung Woon Kim, Jin Woo Kim, Young Seol Kim, Moon Ho Yang; J Korean Endocr Soc. 2005;20(4):385-389. Published online August 1, 2005; DOI: https://doi.org/10.3803/jkes.2005.20.4.385

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Abstract PDF: No Abstract available.

A Case of 45,X Turner's Syndrome with Iron Deficiency Anemia due to Menometrorrhagia and Spontaneous Sexual Development.: Mi Kwang Kwon, Suk Chon, Gwan Pyo Koh, Seung Jun Oh, Jeong Taek Woo, Sung Woon Kim, Jin Woo Kim, Young Seol Kim; J Korean Endocr Soc. 2005;20(2):160-167. Published online April 1, 2005; DOI: https://doi.org/10.3803/jkes.2005.20.2.160

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Abstract PDF

Short stature and gonadal dysgenesis are two characteristic clinical features of Turners syndrome. Very rarely, patients with Turners syndrome may menstruate and even be fertile. We experienced a case of Turners syndrome with spontaneous sexual development and menstruation. A 16-year-old girl was referred for severe anemia and menometrorrahgia. She had nearly normal features, with the exception of a short stature and a single right kidney. Also, she had spontaneous development of secondary sexual characteristics. We performed and anemia study and evaluated her short stature. In chromosomal study of her bone marrow and peripheral blood lymphocytes, she was revealed to have monosomy 45,X. Herein, this case is reported, with a brief review of literature

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Spontaneous Sexual Development and Heavy Menstrual Bleeding in 45,X Monosomy and 45,X/47,XXX Mosaic Turner Syndrome and a Review of the Literature
Myeong Jin Kim, Hwal Rim Jeong
Journal of Pediatric and Adolescent Gynecology.2020; 33(5): 602. CrossRef

The One Year Effects of Growth Hormone Replacement on the Body Composition in the Normal Adults.: Eui Hyun Kim, Suk Chon, Kwan Pyo Koh, Seong Joon Oh, Jeong Taek Woo, Sung Woon Kim, Jin Woo Kim, Young Seol Kim; J Korean Endocr Soc. 2004;19(4):303-319. Published online August 1, 2004

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Abstract PDF: BACKGROUND
The secretion of growth hormone [GH] declines by 14.4% every decade, leading to the suggestion that the elderly are functionally GH deficient, which may increase adipose tissue and decrease the bone mass and density, as well as other negative changes in body composition. Recently, many studies have shown that GH replacement therapy may restore the changes that occur in the body composition with aging. AIM: The GH and insulin like growth factor-I[IGF-I] profiles were identified during GH replacement therapy in the elderly and compared with those of GH deficient[GHD] patients. The metabolic effects of GH replacement on the body composition of the elderly was also investigated, especially the body fat, muscle and bone parameters. Subjects and METHODS: 98 healthy normal out-patients and 13 GHD patients, who had peak GH concentrations less than 5 ng/mL after an insulin tolerance test [ITT] or growth hormone releasing hormone [GHRH] stimulation test, were the subjects of this study. All were receiving appropriate thyroid, adrenal and gonadal hormone replacements. The dose of recombinant human GH [rhGH] was 0.02~0.04 mg [0.06~0.12 IU]/kg of body weight.per week, given nightly by a subcutaneous injection, six times a week, over a 52 week period. The GH was measures after the ITT and GHRH stimulation tests, and the IGF-1, lipid parameters [total cholesterol, triglyceride, HDL-, and LDL cholesterol], visceral adipose tissue [VAT], subcutaneous adipose tissue [SAT], VAT/SAT ratio, quadriceps muscle area, total body fat, total bone mineral density [BMD], alkaline phosphatase [ALP], osteocalcin and urine deoxypyridinoline [DYP], as well as anthropometry, were also assessed. RESULTS: All the anthropometry features between the normal and GHD subjects were very similar. The hormonal profiles were checked; the GH peaks of the ITT and GHRH stimulation tests were significantly higher in the normal compared to the GHD patients, but the GHRH test showed lower GH peaks in than those of the ITT test in the normal subjects. The IGF-I levels after GH replacement were constantly maintained in the normal and GHD groups after 3 week and until the 52nd week. According to the lipid profiles, the GHD group showed significantly decreased total cholesterol and LDL-cholesterol after 12 weeks of GH replacement. The normal male group revealed constantly increased triglyceride levels during the entire 52 weeks of GH replacement, but thr other lipid parameters remained completely unchanged. The normal female group showed no change in any of their lipid parameters. Although the amounts of VAT at the baseline were the same in all groups, only the normal males showed effective visceral fat removal, with significantly reduced VAT after 52 weeks of GH treatment. In the normal female and GHD groups the bone mineral density had a V shaped curve after GH replacement, and the ALP and osteocalcin levels were significantly increased after 26 weeks of GH therapy in the GHD group. CONCLUSION: The body compositions in the normal male, female and GHD groups were similar before the GH replacement therapy, and the serum IGF-I levels were well maintained in all these groups during GH replacement. Although the majority of aging symptoms were improved, the body compositions tended to return to their original stati in the normal groups. GH replacement is recommended in the elderly for better health and well-being

A Case of Cystic Parathyroid Adenoma Presenting as Severe Bony Lesion.: Suk Chon, Young Hee Kim, Ji Young Park, Kwan Pyo Ko, Cheol Young Park, Deog Yoon Kim, Jeong Taek Woo, Sung Woon Kim, Jin Woo Kim, Young Seol Kim, Suck Hwan Go; J Korean Endocr Soc. 2003;18(2):214-220. Published online April 1, 2003

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Abstract PDF: A cystic parathyroid adenoma is rare. A case of primary hyperparathyroidism, with the cystic formation of a parathyroid adenoma and a severe bony lesion, is reported. A 52-year-old male was admitted due to pain in both hips and for evaluation of hypercalcemia. The plasma level of the intact parathyroid hormone(iPTH) was elevated to 1424pg/mL. Ultrasonography and the computed tomography revealed a parathyroid cyst on the left thyroid lower pole. Parathyroid scintigraphy detected a parathyroid adenoma. A radiograph showed a subperiosteal bone resorption on the phalanges, and a brown tumor(osteitis fibrosa cystica) on the femur shaft was noted. A surgical excision of the parathyroid adenoma was performed. The PTH level in the cystic fluid was increased. A histological examination confirmed a cystic parathyroid adenoma. The PTH level was normalized after the operation.

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