Endocrinology and Metabolism

Original Articles

Calcium & bone metabolism
Persistence with Denosumab in Male Osteoporosis Patients: A Real-World, Non-Interventional Multicenter Study: Chaiho Jeong, Jeongmin Lee, Jinyoung Kim, Jeonghoon Ha, Kwanhoon Jo, Yejee Lim, Mee Kyoung Kim, Hyuk-Sang Kwon, Tae-Seo Sohn, Ki-Ho Song, Moo Il Kang, Ki-Hyun Baek; Endocrinol Metab. 2023;38(2):260-268. Published online April 27, 2023; DOI: https://doi.org/10.3803/EnM.2023.1663

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Background
Persistence with denosumab in male patients has not been adequately investigated, although poor denosumab persistence is associated with a significant risk of rebound vertebral fractures.
Methods
We retrospectively evaluated 294 Korean male osteoporosis patients treated with denosumab at three medical centers and examined their persistence with four doses of denosumab injection over 24 months of treatment. Persistence was defined as the extent to which a patient adhered to denosumab treatment in terms of the prescribed interval and dose, with a permissible gap of 8 weeks. For patients who missed their scheduled treatment appointment(s) during the follow-up period (i.e., no-shows), Cox proportional regression analysis was conducted to explore the factors associated with poor adherence. Several factors were considered, such as age, prior anti-osteoporotic drug use, the treatment provider’s medical specialty, the proximity to the medical center, and financial burdens of treatment.
Results
Out of 294 male patients, 77 (26.2%) completed all four sequential rounds of the denosumab treatment. Out of 217 patients who did not complete the denosumab treatment, 138 (63.6%) missed the scheduled treatment(s). Missing treatment was significantly associated with age (odds ratio [OR], 1.03), prior bisphosphonate use (OR, 0.76), and prescription by non-endocrinologists (OR, 2.24). Denosumab was stopped in 44 (20.3%) patients due to medical errors, in 24 (11.1%) patients due to a T-score improvement over –2.5, and in five (2.3%) patients due to expected dental procedures.
Conclusion
Our study showed that only one-fourth of Korean male osteoporosis patients were fully adherent to 24 months of denosumab treatment.

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Denosumab

Reactions Weekly.2023; 1963(1): 206. CrossRef

Thyroid
Usefulness of Real-Time Quantitative Microvascular Ultrasonography for Differentiation of Graves’ Disease from Destructive Thyroiditis in Thyrotoxic Patients: Han-Sang Baek, Ji-Yeon Park, Chai-Ho Jeong, Jeonghoon Ha, Moo Il Kang, Dong-Jun Lim; Endocrinol Metab. 2022;37(2):323-332. Published online April 13, 2022; DOI: https://doi.org/10.3803/EnM.2022.1413

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Background
Microvascular ultrasonography (MVUS) is a third-generation Doppler technique that was developed to increase sensitivity compared to conventional Doppler. The purpose of this study was to compare MVUS with conventional color Doppler (CD) and power Doppler (PD) imaging to distinguish Graves’ disease (GD) from destructive thyroiditis (DT).
Methods
This prospective study included 101 subjects (46 GDs, 47 DTs, and eight normal controls) from October 2020 to November 2021. All ultrasonography examinations were performed using microvascular flow technology (MV-Flow). The CD, PD, and MVUS images were semi-quantitatively graded according to blood flow patterns. On the MVUS images, vascularity indices (VIs), which were the ratio (%) of color pixels in the total grayscale pixels in a defined region of interest, were obtained automatically. Receiver operating characteristic curve analysis was performed to verify the diagnostic performance of MVUS. The interclass correlation coefficient and Cohen’s kappa analysis were used to analyze the reliability of MVUS (ClinicalTrials.gov:NCT04879173).
Results
The area under the curve (AUC) for CD, PD, MVUS, and MVUS-VI was 0.822, 0.844, 0.808, and 0.852 respectively. The optimal cutoff value of the MVUS-VI was 24.95% for distinguishing GD and DT with 87% sensitivity and 80.9% specificity. We found a significant positive correlation of MVUS-VI with thyrotropin receptor antibody (r=0.554) and with thyroid stimulating immunoglobulin bioassay (r=0.841). MVUS showed high intra- and inter-observer reliability from various statistical method.
Conclusion
In a real time and quantitative manner, MVUS-VI could be helpful to differentiate GD from thyroiditis in thyrotoxic patients, with less inter-observer variability.

Citations

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Association of autoimmune thyroid disease with type 1 diabetes mellitus and its ultrasonic diagnosis and management
Jin Wang, Ke Wan, Xin Chang, Rui-Feng Mao
World Journal of Diabetes.2024; 15(3): 348. CrossRef
The Early Changes in Thyroid-Stimulating Immunoglobulin Bioassay over Anti-Thyroid Drug Treatment Could Predict Prognosis of Graves’ Disease
Jin Yu, Han-Sang Baek, Chaiho Jeong, Kwanhoon Jo, Jeongmin Lee, Jeonghoon Ha, Min Hee Kim, Jungmin Lee, Dong-Jun Lim
Endocrinology and Metabolism.2023; 38(3): 338. CrossRef
Duplex Hemodynamic Parameters of Both Superior and Inferior Thyroid Arteries in Evaluation of Thyroid Hyperfunction Disorders
Maha Assem Hussein, Alaa Abdel Hamid, Rasha M Abdel Samie, Elshaymaa Hussein, Shereen Sadik Elsawy
International Journal of General Medicine.2022; Volume 15: 7131. CrossRef
Case 5: A 41-Year-Old Woman With Palpitation
Jiwon Yang, Kabsoo Shin, Jeongmin Lee, Jeonghoon Ha, Dong-Jun Lim, Han-Sang Baek
Journal of Korean Medical Science.2022;[Epub] CrossRef
Microvascular assessment of fascio-cutaneous flaps by ultrasound: A large animal study
Guillaume Goudot, Yanis Berkane, Eloi de Clermont-Tonnerre, Claire Guinier, Irina Filz von Reiterdank, Antonia van Kampen, Korkut Uygun, Curtis L. Cetrulo, Basak E. Uygun, Anahita Dua, Alexandre G. Lellouch
Frontiers in Physiology.2022;[Epub] CrossRef

Calcium & Bone Metabolism
Changes in Serum Dickkopf-1, RANK Ligand, Osteoprotegerin, and Bone Mineral Density after Allogeneic Hematopoietic Stem Cell Transplantation Treatment: Eunhee Jang, Jeonghoon Ha, Ki-Hyun Baek, Moo Il Kang; Endocrinol Metab. 2021;36(6):1211-1218. Published online December 8, 2021; DOI: https://doi.org/10.3803/EnM.2021.1248

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Background
Dickkopf-1 (DKK1) regulates bone formation by inhibiting canonical Wnt/β-catenin pathway signaling, and indirectly enhances osteoclastic activity by altering the expression ratio of receptor activator of nuclear factor-κB ligand (RANKL) relative to osteoprotegerin (OPG). However, it is difficult to explain continued bone loss after allogeneic stem cell transplantation (allo-SCT) in terms of changes in only RANKL and OPG. Few studies have evaluated changes in DKK1 after allo-SCT.
Methods
We prospectively enrolled 36 patients with hematologic malignancies who were scheduled for allo-SCT treatment. Serum DKK1, OPG, and RANKL levels were measured before (baseline), and at 1, 4, 12, 24, and 48 weeks after allo-SCT treatment. Bone mineral density (BMD) was assessed using dual-energy X-ray absorptiometry before (baseline) and 24 and 48 weeks after allo-SCT treatment.
Results
After allo-SCT treatment, the DKK1 level decreased rapidly, returned to baseline during the first 4 weeks, and remained elevated for 48 weeks (P<0.0001 for changes observed over time). The serum RANKL/OPG ratio peaked at 4 weeks and then declined (P<0.001 for changes observed over time). BMD decreased relative to the baseline at all timepoints during the study period, and the lumbar spine in female patients had the largest decline (–11.3%±1.6% relative to the baseline at 48 weeks, P<0.05).
Conclusion
Serum DKK1 levels rapidly decreased at 1 week and then continued to increase for 48 weeks; bone mass decreased for 48 weeks following engraftment in patients treated with allo-SCT, suggesting that DKK1-mediated inhibition of osteoblast differentiation plays a role in bone loss in patients undergoing allo-SCT.

Citations

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Fracture risk and assessment in adults with cancer
Carrie Ye, William D. Leslie
Osteoporosis International.2023; 34(3): 449. CrossRef
Short-Term Impact of Hematopoietic Stem Cell Transplantation in Leukemia Patients on Bone Bio Markers, Electrolytes and Blood Profile
Rhythm Joshi, Zehva Khan, Aakriti Garg, Dinesh Bhurani, Nidhi B Agarwal, Ubada Aqeel, Mohd Ashif Khan
OBM Transplantation.2023; 07(02): 1. CrossRef

Bone Metabolism
Comparison of the Effects of Various Antidiabetic Medication on Bone Mineral Density in Patients with Type 2 Diabetes Mellitus: Jeonghoon Ha, Yejee Lim, Mee Kyoung Kim, Hyuk-Sang Kwon, Ki-Ho Song, Seung Hyun Ko, Moo Il Kang, Sung Dae Moon, Ki-Hyun Baek; Endocrinol Metab. 2021;36(4):895-903. Published online August 9, 2021; DOI: https://doi.org/10.3803/EnM.2021.1026

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Background
Prospective comparative studies on the effects of various antidiabetic agents on bone metabolism are limited. This study aimed to assess changes in bone mass and biochemical bone markers in postmenopausal patients with type 2 diabetes mellitus (T2DM).
Methods
This prospective, multicenter, open-label, comparative trial included 264 patients with T2DM. Patients who had received a metformin, or sulfonylurea/metformin combination (Group 1); a thiazolidinedione combination (Group 2); a dipeptidyl peptidase-4 inhibitor (gemigliptin) combination (Group 3); or an sodium-glucose cotransporter 2 inhibitor (empagliflozin) combination (Group 4) were prospectively treated for 12 months; bone mineral density (BMD) and bone turnover marker (BTM) changes were evaluated.
Results
The femoral neck BMD percentage changes were −0.79%±2.86% (Group 1), −2.50%±3.08% (Group 2), −1.05%±2.74% (Group 3), and −1.24%±2.91% (Group 4) (P<0.05). The total hip BMD percentage changes were −0.57%±1.79% (Group 1), −1.74%±1.48% (Group 2), −0.75%±1.87% (Group 3), and −1.27%±1.72% (Group 4) (P<0.05). Mean serum BTM (C-terminal type 1 collagen telopeptide and procollagen type 1 amino-terminal propeptide) levels measured during the study period did not change over time or differ between groups.
Conclusion
Significant bone loss in the femoral neck and total hip was associated with thiazolidinedione combination regimens. However, bone loss was not significantly associated with combination regimens including gemigliptin or empagliflozin. Caution should be exercised during treatment with antidiabetic medications that adversely affect the bone in patients with diabetes at a high risk of bone loss.

Citations

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Meta-Analysis on the Association Between DPP-4 Inhibitors and Bone Mineral Density and Osteoporosis
Lili Huang, Wei Zhong, Xinghuan Liang, Huijuan Wang, Shi-en Fu, Zuojie Luo
Journal of Clinical Densitometry.2024; 27(1): 101455. CrossRef
A multicentre, double‐blind, placebo‐controlled, randomized, parallel comparison, phase 3 trial to evaluate the efficacy and safety of pioglitazone add‐on therapy in type 2 diabetic patients treated with metformin and dapagliflozin
Soo Lim, Seung‐Hwan Lee, Kyung‐Wan Min, Chang Beom Lee, Sang Yong Kim, Hye Jin Yoo, Nan Hee Kim, Jae Hyeon Kim, Seungjoon Oh, Jong Chul Won, Hyuk Sang Kwon, Mi Kyung Kim, Jung Hwan Park, In‐Kyung Jeong, Sungrae Kim
Diabetes, Obesity and Metabolism.2024;[Epub] CrossRef
Association of Bone Turnover Markers with Type 2 Diabetes Mellitus and Microvascular Complications: A Matched Case-Control Study
Yilin Hou, Xiaoyu Hou, Qian Nie, Qiuyang Xia, Rui Hu, Xiaoyue Yang, Guangyao Song, Luping Ren
Diabetes, Metabolic Syndrome and Obesity.2023; Volume 16: 1177. CrossRef
Complementary effects of dapagliflozin and lobeglitazone on metabolism in a diet-induced obese mouse model
Yun Kyung Lee, Tae Jung Oh, Ji In Lee, Bo Yoon Choi, Hyen Chung Cho, Hak Chul Jang, Sung Hee Choi
European Journal of Pharmacology.2023; 957: 175946. CrossRef

Hypothalamus and Pituitary Gland
Heart Rate Variability in Postoperative Patients with Nonfunctioning Pituitary Adenoma: Jeonghoon Ha, Hansang Baek, Chaiho Jeong, Minsoo Yeo, Seung-Hwan Lee, Jae Hyoung Cho, Ki-Hyun Baek, Moo Il Kang, Dong-Jun Lim; Endocrinol Metab. 2021;36(3):678-687. Published online June 10, 2021; DOI: https://doi.org/10.3803/EnM.2021.978

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Background
Decreased heart rate variability (HRV) has been reported to be associated with cardiac autonomic dysfunction. Hypopituitarism in nonfunctioning pituitary adenoma (NFPA) is often linked to increased cardiovascular mortality. We therefore hypothesized that postoperative NFPA patients with hormone deficiency have an elevated risk of HRV alterations indicating cardiac autonomic dysfunction.
Methods
A total of 22 patients with NFPA were enrolled in the study. Between 3 and 6 months after surgery, a combined pituitary function test (CPFT) was performed, and HRV was measured. The period of sleep before the CPFT was deemed the most stable period, and the hypoglycemic period that occurred during the CPFT was defined as the most unstable period. Changes in HRV parameters in stable and unstable periods were observed and compared depending on the status of hormone deficiencies.
Results
In patients with adrenocorticotropic hormone (ACTH) deficiency with other pituitary hormone deficiencies, the low frequency to high frequency ratio, which represents overall autonomic function and is increased in the disease state, was higher (P=0.005). Additionally, the standard deviation of the normal-to-normal interval, which decreases in the autonomic dysfunction state, was lower (P=0.030) during the hypoglycemic period. In panhypopituitarism, the low frequency to high frequency ratio during the hypoglycemic period was increased (P=0.007).
Conclusion
HRV analysis during CPFT enables estimation of cardiac autonomic dysfunction in patients with NFPA who develop ACTH deficiency with other pituitary hormone deficiencies or panhypopituitarism after surgery. These patients may require a preemptive assessment of cardiovascular risk.

Citations

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Heart Rate Variability in Subjects with Severe Allergic Background Undergoing COVID-19 Vaccination
Maria Bernadette Cilona, Filippo D’Amico, Chiara Asperti, Giuseppe Alvise Ramirez, Stefano Turi, Giovanni Benanti, Shai Marc Bohane, Serena Nannipieri, Rosa Labanca, Matteo Gervasini, Federica Russetti, Naomi Viapiana, Martina Lezzi, Giovanni Landoni, Lor
Vaccines.2023; 11(3): 567. CrossRef
Pituitary Diseases and COVID-19 Outcomes in South Korea: A Nationwide Cohort Study
Jeonghoon Ha, Kyoung Min Kim, Dong-Jun Lim, Keeho Song, Gi Hyeon Seo
Journal of Clinical Medicine.2023; 12(14): 4799. CrossRef
Effect of a 16-Session Qigong Program in Non-Hodgkin Lymphoma Survivors: A Randomized Clinical Trial
Keyla Vargas-Román, Emilia I. De la Fuente-Solana, Jonathan Cortés-Martín, Juan Carlos Sánchez-García, Christian J. González-Vargas, Lourdes Díaz-Rodríguez
Journal of Clinical Medicine.2022; 11(12): 3421. CrossRef

Response

Thyroid
Association of Hyperparathyroidism and Papillary Thyroid Cancer: A Multicenter Retrospective Study (Endocrinol Metab 2020;35:925-32, Chaiho Jeong et al.): Chaiho Jeong, Jeonghoon Ha, Moo Il Kang; Endocrinol Metab. 2021;36(1):205-206. Published online February 24, 2021; DOI: https://doi.org/10.3803/EnM.2021.100

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Original Article

Clinical Study
Association of Hyperparathyroidism and Papillary Thyroid Cancer: A Multicenter Retrospective Study: Chaiho Jeong, Hye In Kwon, Hansang Baek, Hun-Sung Kim, Dong-Jun Lim, Ki-Hyun Baek, Jeonghoon Ha, Moo Il Kang; Endocrinol Metab. 2020;35(4):925-932. Published online December 10, 2020; DOI: https://doi.org/10.3803/EnM.2020.725

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Background
Concomitant papillary thyroid cancer (PTC) and hyperparathyroidism (HPT) have been reported in several studies. Our study aimed to investigate the incidence of concomitant PTC in HPT patients upon preoperative diagnosis and present a clinical opinion on detecting thyroid malignancy in case of parathyroidectomy.
Methods
Patients who underwent parathyroidectomy between January 2009 and December 2019 in two medical centers were included. Of the 279 participants 154 were diagnosed as primary hyperparathyroidism (pHPT) and 125 as secondary hyperparathyroidism (sHPT). The incidence of concomitant PTC and its clinical characteristics were compared with 98 patients who underwent thyroidectomy and were diagnosed with classical PTC during the same period.
Results
Concurrent PTC was detected in 14 patients (9.1%) with pHPT and in nine patients (7.2%) with sHPT. Ten (71.4%) and seven (77.8%) PTCs were microcarcinomas in the pHPT and sHPT cases respectively. In the pHPT patients, vitamin D was lower in the pHPT+PTC group (13.0±3.7 ng/mL) than in the pHPT-only group (18.5±10.4 ng/mL; P=0.01). Vitamin D levels were also lower in the sHPT+PTC group (12.3±5.6 ng/mL) than in the sHPT-only group (18.0±10.2 ng/mL; P=0.12). In the concomitant PTC group, lymph node ratio was higher than in the classical PTC group (P=0.00).
Conclusion
A high prevalence of concomitant PTC was seen in patients with pHPT and sHPT. Those concomitant PTCs were mostly microcarcinomas and had more aggressive features, suggesting that efforts should be made to detect concomitant malignancies in the preoperative parathyroidectomy evaluation.

Citations

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The unexpected effect of parathyroid adenoma on inflammation
Ahmet Tarik Harmantepe, Belma Kocer, Zulfu Bayhan, Emre Gonullu, Ugur Can Dulger
Updates in Surgery.2024; 76(2): 589. CrossRef
Evaluation of Nodular Goiter and Papillary Thyroid Cancer Coincidence in Patients with Primary Hyperparathyroidism
Mustafa ÇALIŞKAN, Hasret CENGİZ, Taner DEMİRCİ
Düzce Tıp Fakültesi Dergisi.2023; 25(2): 200. CrossRef
Papillary thyroid carcinoma coexisting with benign thyroid and parathyroid pathology: clinical and pathomorphological features
A. Dinets, M. Gorobeiko, V. Hoperia, A. Lovin, S. Tarasenko
INTERNATIONAL JOURNAL OF ENDOCRINOLOGY (Ukraine).2023; 19(4): 274. CrossRef
The Nexus of Hyperparathyroidism and Thyroid Carcinoma: Insights into Pathogenesis and Diagnostic Challenges—A Narrative Review
Gregorio Scerrino, Nunzia Cinzia Paladino, Giuseppina Orlando, Giuseppe Salamone, Pierina Richiusa, Stefano Radellini, Giuseppina Melfa, Giuseppa Graceffa
Journal of Clinical Medicine.2023; 13(1): 147. CrossRef
Is preoperative parathyroid localization necessary for tertiary hyperparathyroidism?
Rongzhi Wang, Peter Abraham, Brenessa Lindeman, Herbert Chen, Jessica Fazendin
The American Journal of Surgery.2022; 224(3): 918. CrossRef
Papillary thyroid carcinoma prevalence and its predictors in patients with primary hyperparathyroidism
Elif Tutku DURMUŞ, Ayşegül ATMACA, Mehmet KEFELİ, Ramis ÇOLAK, Buğra DURMUŞ, Cafer POLAT
Journal of Health Sciences and Medicine.2022; 5(5): 1499. CrossRef
Association of Hyperparathyroidism and Papillary Thyroid Cancer: A Multicenter Retrospective Study (Endocrinol Metab 2020;35:925-32, Chaiho Jeong et al.)
Chaiho Jeong, Jeonghoon Ha, Moo Il Kang
Endocrinology and Metabolism.2021; 36(1): 205. CrossRef
Association of Hyperparathyroidism and Papillary Thyroid Cancer: A Multicenter Retrospective Study (Endocrinol Metab 2020;35:925-32, Chaiho Jeong et al.)
Burcu Candemir, Coşkun Meriç
Endocrinology and Metabolism.2021; 36(1): 203. CrossRef

Case Reports

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 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.

Original Article

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.

Case Reports

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.

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.

Original Articles

Clinical Study
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; Endocrinol Metab. 2019;34(2):195-202. Published online June 24, 2019; DOI: https://doi.org/10.3803/EnM.2019.34.2.195

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Background

The natural course of thyroid cancer nodules and benign nodules is different. This study was to compare the changes in size between thyroid cancer nodules and thyroid benign nodules. The risk factors associated with the changes of thyroid cancer nodules were assessed.

Methods

This study contains retrospective observational and prospective analysis. A total of 113 patients with 120 nodules were recruited in the cancer group, and 116 patients with 119 nodules were enrolled in the benign group. Thyroid ultrasonography was performed at least two times at more than 1-year interval.

Results

The mean follow-up durations were 29.5±18.8 months (cancer group) and 31.9±15.8 months (benign group) (P=0.32). The maximum diameter change in length was 0.36±0.97 mm/year in the cancer group and –0.04±0.77 mm/year in the benign group (P<0.01). The volume was significantly increased in the cancer group compared with the benign group (0.06±0.18 mL/year vs. 0.004±0.05 mL/year, respectively, P<0.01; 26.9%±57.9%/year vs. 1.7%±26.0%/year, P<0.01). Initial maximum diameter (β=0.02, P<0.01) and initial volume (β=0.13, P<0.01) were significantly associated with volume change (mL)/year. Initial maximum standardized uptake value did not predict the nodule growth.

Conclusion

It is suggested that thyroid cancer nodules progress rapidly compared with benign nodules. Initial size and volume of nodule were independent risk factors for cancer nodule growth.

Citations

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RAS-Mutated Cytologically Indeterminate Thyroid Nodules: Prevalence of Malignancy and Behavior Under Active Surveillance
Hannah J. Sfreddo, Elizabeth S. Koh, Karena Zhao, Christina E. Swartzwelder, Brian R. Untch, Jennifer L. Marti, Benjamin R. Roman, Jared Dublin, Ronald S. Wang, Rong Xia, Jean-Marc Cohen, Bin Xu, Ronald Ghossein, Babak Givi, Jay O. Boyle, R. Michael Tuttl
Thyroid®.2024;[Epub] CrossRef
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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

Citations to this article as recorded by

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Letter: Natural Course of Cytologically Benign Thyroid Nodules: Observation of Ultrasonographic Changes (Endocrinol Metab 2013;28:110-8, Dong Jun Lim et al.)
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