Endocrinology and Metabolism

Case Report

Thyroid
Delayed Surgery for Parathyroid Adenoma Misdiagnosed as a Thyroid Nodule and Treated with Radiofrequency Ablation: Ho-Su Kim, Bong Hoi Choi, Jung Rang Park, Jong Ryeal Hahm, Jung Hwa Jung, Soo Kyoung Kim, Sungsu Kim, Kyong-Young Kim, Soon Il Chung, Tae Sik Jung; Endocrinol Metab. 2013;28(3):231-235. Published online September 13, 2013; DOI: https://doi.org/10.3803/EnM.2013.28.3.231

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Primary hyperparathyroidism occurs as a result of isolated parathyroid adenoma in 80% to 85% of all cases. A ^99mtechnetium (^99mTc) sestamibi scan or neck ultrasonography is used to localize the neoplasm prior to surgical intervention. A 53-year-old female was referred for the exclusion of metabolic bone disease. She presented with low back pain that had persisted for the past 6 months and elevated serum alkaline phosphatase (1,253 IU/L). Four years previously, she had been diagnosed at a local hospital with a 2.3-cm thyroid nodule, which was determined to be pathologically benign. Radiofrequency ablation was performed at the same hospital because the nodule was still growing during the follow-up period 2 years before the visit to our hospital, and the procedure was unsuccessful in reducing the size of the nodule. The results of the laboratory tests in our hospital were as follows: serum calcium, 14.6 mg/dL; phosphorus, 3.5 mg/dL; and intact parathyroid hormone (iPTH), 1,911 pg/mL. Neck ultrasonography and ^99mTc sestamibi scan detected a 5-cm parathyroid neoplasm in the left lower lobe of the patient's thyroid; left parathyroidectomy was performed. This case indicated that thyroid ultrasonographers and pathologists need to be experienced enough to differentiate a parathyroid neoplasm from a thyroid nodule; ^99mTc sestamibi scan, serum calcium, and iPTH levels can help to establish the diagnosis of parathyroid neoplasm.

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Original Articles

Differential Diagnostic Value of Total T3/Free T4 Ratio in Graves' Disease and Painless Thyroiditis Presenting Thyrotoxicosis.: Sang Min Lee, Soo Kyoung Kim, Jong Ryeal Hahm, Jung Hwa Jung, Ho Su Kim, Sungsu Kim, Soon Il Chung, Bong Hoi Choi, Tae Sik Jung; Endocrinol Metab. 2012;27(2):121-125. Published online June 20, 2012; DOI: https://doi.org/10.3803/EnM.2012.27.2.121

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Abstract PDF

BACKGROUND
It is important to differentiate Graves' disease from that of painless thyroiditis in patients with thyrotoxicosis. In this study, we evaluated the usefulness of total T3 to free T4 ratio in making a differential diagnosis between Graves' disease and painless thyroiditis. METHODS: We reviewed medical records of thyrotoxic patients, who had been diagnosed with Graves' disease or painless thyroiditis, from October 2009 to July 2011. We assessed clinical characteristics, serum levels of total T3, free T4, thyroid stimulating hormone, thyrotropin-binding inhibitory immunoglobulin, and findings of 99mTechnetium thyroid scan. We analyzed the total T3/free T4 ratios between Graves' disease and painless thyroiditis patients. RESULTS: A total of 76 untreated thyrotoxic patients "49 Graves' disease and 27 painless thyroiditis" were examined. The total T3, free T4 levels and the total T3/free T4 ratios were significantly higher in patients with Graves' disease than in those with painless thyroiditis (P < 0.001). In the total T3/free T4 ratio > 73, the possibility of Graves' disease was significantly higher than in painless thyroiditis (sensitivity, 75.5%; specificity, 70.3%). The sensitivity and specificity of the total T3/free T4 ratio in patients with free T4 < 3.6 ng/dL have been increased (sensitivity, 100%; specificity, 71.4%). CONCLUSION: The total T3/free T4 ratios was useful for making a differential diagnosis between Graves' disease and painless thyroiditis.

Citations

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Comparison of 99mTc Pertechnetate Thyroid Uptake Rates by Gamma Probe and Gamma Camera Methods for Differentiating Graves’ Disease and Thyroiditis
Meihua Jin, Jonghwa Ahn, Seong-gil Jo, Jangwon Park, Min Ji Jeon, Won Gu Kim, Tae Yong Kim, Won Bae Kim, Young Kee Shong, Jin-Sook Ryu
Nuclear Medicine and Molecular Imaging.2022; 56(1): 42. CrossRef
Interpretation of puzzling thyroid function tests
Jee Hee Yoon, Ho-Cheol Kang
Journal of the Korean Medical Association.2018; 61(4): 241. CrossRef
The High Proportion of Painless Thyroiditis as a Cause of Thyrotoxicosis in Korea
Sang Il Mo, A Jeong Ryu, Yeo Joo Kim, Sang Jin Kim
Journal of Korean Thyroid Association.2015; 8(1): 61. CrossRef

Clinical Characteristics of Patients with Hyperglycemic Emergency State Accompanying Rhabdomyolysis.: Soo Kyoung Kim, Jong Ha Baek, Kyeong Ju Lee, Jong Ryeal Hahm, Jung Hwa Jung, Hee Jin Kim, Ho Su Kim, Sungsu Kim, Soon Il Chung, Tae Sik Jung; Endocrinol Metab. 2011;26(4):317-323. Published online December 1, 2011; DOI: https://doi.org/10.3803/EnM.2011.26.4.317

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Abstract PDF

BACKGROUND
The purpose of this study was to investigate the prevalence of rhabdomyolysis and its association with both clinical course and prognosis and to evaluate the factors associated with rhabdomyolysis in patients with hyperglycemic emergencies. METHODS: We reviewed the medical records of patients with hyperglycemic emergencies who visited our hospital from May 2003 to April 2010. We assessed the clinical characteristics, biochemical profiles and clinical course of patients and analyzed these data according to the presence of rhabdomyolysis. RESULTS: The prevalence of rhabdomyolysis was 29 patients (28.4%) among 102 patients. Mean serum osmolarity, glucose and serum creatinine levels were higher in patients with rhabdomyolysis than those without rhabdomyolysis. Patients with rhabdomyolysis had higher rates of hemodialysis and mortality than those without the condition. The factors associated with rhabdomyolysis in the hyperglycemic emergency state were increased serum osmolarity and APACHE II score on admission (P < 0.05). CONCLUSION: Rhabdomyolysis commonly occurred in patients with hyperglycemic emergencies and this could aggravate their clinical course and increase mortality.

Citations

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Acute diabetes complications
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Journal of Gerontology and Geriatrics.2021; 69(4): 269. CrossRef
The Authors Reply: Clinical and Biochemical Characteristics of Elderly Patients With Hyperglycemic Emergency State at a Single Institution
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Annals of Geriatric Medicine and Research.2017; 21(1): 38. CrossRef
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Yun Jae Shin, Dae In Kim, Dong Won Lee, Beung Kwan Jeon, Jung Geun Ji, Jung Ah Lim, Young Jung Cho, Hong Woo Nam
Annals of Geriatric Medicine and Research.2016; 20(4): 185. CrossRef

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