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Byoung Joon Kim  (Kim BJ) 12 Articles
A Case of Cushing's Syndrome Complicating Pregnancy Adrenalectomized after Delivery.
Jeong Soo Cho, Jae Seok Jeon, Kyu Jeong Ahn, Byoung Joon Kim, Sung Ho Kwon, Eun Gyu Lee, Won Wook Choi, Sang Won Park, Won Mee Lee
J Korean Endocr Soc. 2003;18(5):489-495.   Published online October 1, 2003
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Pregnancy is rare in women with Cushing's syndrome, as the associated infertility is related to excess cortisol and/or androgen. However, approximately 100 such cases have been reported, with 50% due to an adrenal cortical adenoma. Establishing a diagnosis and cause can be difficult. Clinically, striae, hypertension and gestational diabetes are common features in pregnancy, with hypertension and diabetes being the most common signs of Cushing's syndrome in pregnant women. Furthermore, biochemically, a normal pregnancy is associated with a several fold increase in plasma cortisol, as the increased cortisol production rate also increases the cortisol binding protein. Untreated, the condition results in high maternal and fetal morbidity and mortality. An adrenal or pituitary adenoma should be excised, but a metyrapone, which is not teratogenic, has been effective in controlling many cases of excess cortisol. Here, a case of Cushing's syndrome, complicating a pregnancy due to an adrenal cortical adenoma, with thorough obstetric and medical management, including a metyrapone, which was adrenalectomized after delivery, is reported.
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A Case of Islets Cell Hyperplasia Diagnosed by Selective Arterial Calcium Stimulation Test.
Jin Hoon Youn, Kyu Jeung Ahn, Yeong Shil Joo, Byoung Joon Kim, Sung Hoon Kim, Kye Hyoung Kwon, Myung Ah Jung, Jin Soo Yang, In Su Jung, Chung Hyeon Kim, Sung Bum Cho, Tae Seok Lee, Eun Kyung Kim
J Korean Endocr Soc. 2001;16(4-5):514-519.   Published online October 1, 2001
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We report a 40-year-old female patient with clinical findings suggestive of insulinoma. Although imaging studies did not reveal any tumors in the pancreas, a selective arterial calcium stimulation test(SACI), procedurally simpler and more effective than transhepatic pancreatic venous sampling, was performed. And then near total pancreatectomy was carried out because the possibility of small insulinoma could not be completely excluded. Grossly, the surgically removed pancreas did not reveal any tumors. However, the pancreas exhibited islets cell hyperplasia. To our knowledge, this is the first reported authentic case in a Korean adult of islet-cell hyperplasia diagnosed by selective arterial calcium stimulation test.
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Clinical and Hormonal Analysis of Five New Cases and Eight Previously Reported Cases of Isolated ACTCH Deficiency in Korea.
Eun Young Oh, Byoung Joon Kim, Yun Jae Chung, Dong Joon Kim, Jong Ryul Hahm, Jae Hoon Chung, Yong Ki Min, Myung Shik Lee, Moon Kyu Lee, Kwang Won Kim
J Korean Endocr Soc. 1999;14(3):568-577.   Published online January 1, 2001
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Isolated ACTH deficiency is an uncommon disorder, which is defined by low cortisol production with low or normal plasma ACTH levels and no other pituitary abnormalities. We report five new cases of this disorder, and summarize the clinical and hormonal features of 8 previously reported cases in Korea plus 5 new cases. 1) The clinical manifestations of isolated ACTH deficiency are variable, non-specific and similar to those seen in adrenocortical insufficiency of any cause, the age of patients ranged from 21 to 66 years old with an average age of 46 years, and the male to female ratio was 10:3. 2) Hyponatremia and hypoglycemia were commmon laboratory findings, so the presence of unexplained hyponatremia or hypoglycemia should always warrant consideration of the diagnosis of isolated ACTH deficiency. 3) 3 of 13 patients accompanied by empty sella suggesting selective destruction of pituitary ACTH producing cells. 4) ACTH response to exogenous CRH or vasopressin was not elicited in all tested cases, suggesting pituitary disorders. 5) Most patients showed dramatic response with oral predinisone. In conclusion, when there are unexplained general weakness, fatigue, weight loss, nausea, vomiting, hypoglycemia, or hyponatremia, isolated ACTH deficiency should be excluded. Immunologic and pathologic studies, and hormonal evolution with glucocorticoid treatment are needed to understand the pathogenesis of isolated ACTH deficiency.
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A Case of Diabetes Mellitus Caused by Calcitonin and Somatostatin Secreting Pancreatic Islet Tumor.
Jae Hoon Chung, Kwang Won Kim, Byoung Joon Kim, Sung Hoon Kim, Kyung Ah Kim, Myung Sik Lee, Moon Gyu Lee, Yong Ki Min, Jong Ryol Ham, Dong Joon Kim, Hoe Jung Lee, Young Ryoon Oh
J Korean Endocr Soc. 1999;14(2):425-431.   Published online January 1, 2001
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A case of 39-year-old diabetic patient with a calcitonin and somatostatin secreting pancreatic islet tumor is presented. He had suffered from chronic diarrhea and dyspepsia for 10 years and was diagnosed with diabetes 2 years ago. Abdominal CT revealed a huge abdominal mass which was considered as a neuroendocrine tumor after US-guided needle biopsy. A distal pancreatectomy and splenectomy were performed. Histologically, tumor cells, amanged in solid sheets, showed small nuclei without significant atypia and granular eosinophilic cytoplasm. Tumor cells showed strong immunoreacitivity for calcitonin and somatostatin. The serum clacitonin was markedly elevated (268.7 pmol/L, normal range; 0.9-7.6 pmol/L). After resection of the tumor, diarrhea and dyspepsia diappeared, and oral glucose tolerance test showed normal glucose tolerance with normalization of calcitonin.
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Prevalence of Thyrotoxicosis and Hypothyroidism in the Subjects for Health Check-Up.
Jae Hoon Chung, Byoung Joon Kim, Yun Ho Choi, Myung Hee Shin, Sung Hoon Kim, Yong Ki Min, Myung Sik Lee, Moon Gyu Lee, Kwang Won Kim
J Korean Endocr Soc. 1999;14(2):301-313.   Published online January 1, 2001
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BACKGROUND
The prevalence of ovat hyperthyroidism ar hypothyroidism has been estimated up to 5% in the general populatian. Subclinical hyperthyroidism and subclinical hypothyroidism have pevalences of approximately 1% and 6%, ectively. The prevalence of hypothyroidism may be associated with excessive intake of iodine in iodine sufficient areas. Therefore, we assumed the prevalence of thyroid dysfunction in Karea might be different from those af Western cauntries. However, thete have been no surveys to examine the prevalence of thyroid dysfunction in Karea. We performed the study to investigate the prevalence of thyrotoxicosis and hypothyroidism in Korean adults. METHODS: This study was performed in 15019 subjects (8275 men, 6744 women; between 17 and 87 years of age) visited in health promotion center of Samsung Medical Center for 12 months in 1996. Serum T3, T4, and TSH concentrations were measured with RIA or IRMA using commercial kits. History of thyroid dysfunction and current medication were obtained from medical records. The criteria for thyrotoxicosis were TSH level below than 0.30 mU/L and increased T3 or T4 levels (T3 > 3.1 nmol/L or T4 > 152 nmol/L). Patients who had TSH level above than 5.0 mU/L and T4 level below than 77 nmol/L met the criteria for hypothyroidism. RESULTS: The prevalence of thyrotoxicosis was 5.5/1000 population (men 3.6/1000, women 7.7/1000) with peak prevalence in fifth decade. The prevalence of previously undiagnosed thyrotoxicosis was 4.0/1000 (men 2.9/1000, women 5.3/1000). The prevalence of hypothyroidism was 2.8/1000 population (men 1.1/1000, women 4.9/1000) with peak prevalence in seventh decade. The prevalence of previously undiagnosed hypothyroidism was 1.6/1000 (men 0.6/1000, women 2.S/1000). The prevalence of subclinical thyrotoxicosis was 12.4/1000 population (men 11.8/1000, women 13.0/1000). The prevalence of subclinical hypothyroidism was 18.2/1000 population (men 11.2/1000, women 26.7/1000) which frequency was increased with age. CONCLUSION: Although the prevalence of thyrotoxicosis and hypothyroidism was not significantly different from those of other countries, it was lower than expected and female preponderance is not significant. The prevalence of subclinical thyrotoxicosis and subclinical hypothyroidism was lower than those of other countries. The prevalence of subclinical hypothyroidism was higher in women and old ages. (J Kor Soc Endecrinol 14:301~313, 1999)
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Unolateral Aldosterone-producing Adenoma with a Contralateral Black Adenoma.
Eun Young Oh, Myung Shik Lee, Young Hee Lim, Soo Jung Kang, Jung Hak Chun, Byoung Joon Kim, Jae Hoon Chung, Yong Ki Min, Moon Kyu Lee, Kwang Won Kim, Jung Hyun Yang
J Korean Endocr Soc. 1999;14(1):177-182.   Published online January 1, 2001
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Primary aldosteronism due to unilateral adenoma is a rare cause of surgically curable hypertension. Bilateral adrenal mass has occasionally been reported in this syndrome, and bilateral aldosterone-producing adenoma (APA), or bilateral adrenal nodular hyperplasia have been demonstrated in some cases. However, another possibility is the coexistence of a unilateral APA with a contralateral benign or metastatic nonfunctioning mass, because adrenal tumors are frequently found at autopsy or incidentally detected during abdominal morphological evaluation in patients without adrenal dysfunction. A 39 year-old woman presented with hyperaldosteronism, suppressed renin levels, and bilateral adrenal mass on adrenal CT scanning. Selective adrenal venous sampling was unsuccessful in demonstrating concentration gradient of aldosterone. Postoperative measurement of hormone content in the tumor extract revealed unilateral aldosteron-producing adenoma with contralateral nonfunctioning black adenoma, Determination of hormone content in the tumor extract could be useful for the discrimination of functioning and nonfunctioning endocrine tumors, particularly in case of multiple tumors.
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A Case of Acromegaly with Graves' Disease.
Jae Hoon Chung, Kwang Won Kim, Byoung Joon Kim, Sung Hoon Kim, Myung Sik Lee, Moon Gyu Lee, Yong Ki Min, Jong Hyun Kim, Eun Young Oh, Yun Jae Chung, Sang Soo Bae
J Korean Endocr Soc. 1998;13(3):432-438.   Published online January 1, 2001
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Goiter is present in 25-50% of patients with acromegaly, which probably results from IGF- I stimulation of thyroid cell growth. These goiters are usually non-toxic but there have been well documented cases of co-existent hyperthyroidism and acromegaly. Graves disease with acromegaly has been rarely reported compared with the other type of hyperthyroidism due to increased tumoral secretion of TSH. We experienced a 44-year-old woman who presented with Graves disease and acromegaly. Basal serum GH and IGF-I concentrations were 10.8 pg/L and 571.82 ng/mL, respectively (reference value: (5 mg/L and 130-354 ng/mL, respectively). GH was not suppressed less than 2 pg/L during oral glucose loading test. GH was stimulated by TRH. Postcontrast sellar MRI demonstrated ovoid-shaped low signal intensity nodule measuring O.8 cm in diameter in left side of pituitary gland. Thyroid scan(131I) showed enlarged thyroid with increased radioiodine uptake (61.3%). Histologic examination showed acidophilic adenoma. GH and prolactin were positive on immunohistochemical staining. GH was suppressed less than 2.26 mg/L by oral glucose loading following operation. The patient has been followed with antithyroid drug(PTU) medication after operation(TSA).
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A Case of Acromegaly Caused by Mixed Gangliocytoma-Adenoma of the Pituitary Gland.
Jae Hoon Chung, Kwang Won Kim, Byoung Joon Kim, Sung Hoon Kim, Myung Sik Lee, Moon Gyu Lee, Yong Ki Min, Yeon Rim Seo, Jong Hyun Kim, Sang Jong Park
J Korean Endocr Soc. 1998;13(3):423-431.   Published online January 1, 2001
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The tumors containing ganglion cells are rare in the pituitary gland. These tumors are divided into two groups. The first group is the cases of mixed gangliocytoma-adenoma that contained both gangliocytoma and pituitary adenoma elements in the same tumor and the second group is those of gangliocytoma that contained only gangliocytoma element. Since the first description by Kiyono in 1926, 45 cases have been reported. The most common presentation of these tumors is acromegaly and the cases of Cushings disease and galactorrhea-amenorrhea also have been reported. In immunohistochemical study, hypothalamic-releasing hormones are stained in gangliocytoma cells and adenohypophyseal hormones are stained in adenoma cells. The releasing hormones stained in gangliocytoma element and the pituitary hormones stained in adenoma elements are usually closely related but unrelated cases also have been reported. We report a case of a 41 year-old lady with acromegaly which was diagnosed as mixed gangliocytoma-adenoma after surgical removal of the pituitary tumor.
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A Frequency of Hypothyroidism in a Population of Hypercholesterolemin Subjects.
Jae Hoon Chung, Kwang Won Kim, Byoung Joon Kim, Sung Hoon Kim, Kyung Ah Kim, Myung Sik Lee, Moon Gyu Lee, Yong Ki Min, Yun Ho Choi, Myung Hee Shin
J Korean Endocr Soc. 1998;13(3):351-358.   Published online January 1, 2001
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BACKGROUND
Hypothyroidism is a treatable cause of secondary hyperlipidemia. The lipid profile usually seen is an increased total and low density lipoprotein(LDL) cholesterol, and the plasma triglyceride may also be increased. Hypercholesterolemia associated with hypothyroidism is an important factor in the pathogenesis of coronary artery disease(CAD). And the hyperchole-sterolemia caused by hypothyroidism is potentially reversible by thyroid hormone replacement therapy. Hypothyroidism should be ruled out by routine laboratory screening as a treatable cause of secondary hyperlipidemia and increased CAD risk. We carried out this study aimed at evaluating the frequency of hypothyroidism and its relationship with serum cholesterol concentration in Koreans. METHODS: We investigated 15028(men 8273, women 6755) Korean subjects who visited our hospital center for health promotion during an one year period(from January 1, 1996, to December 31, 1996). Among them, we analyzed 6756 hypercholesterolemic subjects whose serum cholesterol levels were greater than 200 mg/dL. They performed thyroid function tests(total T, T4, and TSH) and lipid profiles(total cholesterol, triglyceride and HDL-cholesterol) were measured by enzyme assay. We defined hypothyroidism by serum thyrotropin values greater than 5 U/mL. RESULTS: The observed prevalence of hypothyroidism was 2.4%(163/6756). Among those with high TSH levels, 17(10.4%) had overt hypothyroidism with a low T4 (below 6 g/dL) level. As we analyzed the frequency of hypothyroidism according to cholesterol range by 20 mg/dL, the frequency was significantly increased in the group whose serum cholesterol levels were greater than 300 mg/dL, especially in women over 50 years of age. Analysis of lipid parameters showed that hypertriglyceridemia was frequent and hyperHDLaemia was observed in hypothyroidic populations. CONCLUSION: Screening for hypothyroidism by measurement of thyrotropin values is of particular importance in patients with hypercholesterolemia. And the frequency of hypothyroidism was more significantly increased in whose serum cholesterol levels were greater than 300 mg/dL, especially in the group of women over 50 years of age.
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Comparison of Immunohistochemical and Clinical Characteristics in Pituitary Adenoma with Acromegaly.
Jae Hoon Chung, Eun Mi Koh, Kwang Won Kim, Byoung Joon Kim, Sung Hoon Kim, Kyung Ah Kim, Myung Sik Lee, Moon Gyu Lee, Yong Ki Min, Yeon Rim Seo, Dong Kyu Na, Jong Hyun Kim, Kyu Jeong Ahn, Jin Seok Kim
J Korean Endocr Soc. 1998;13(3):324-330.   Published online January 1, 2001
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BACKGROUND
It assumed that plurihormonal pituitary adenomas in acromegaly, which were immunohistochemically stained with other pituitary hormones in addition to GH and prolactin, would be originated from poorly differentiated cells. Therefore, we speculated that they might have higher growth rates and worse prognosis than monohormonal adenomas. To verify this speculation, we analyzed the frequency of plurihormonal adenomas and compared the clinical parameters and radiological invasiveness between plurihormonal adenoma and GH-prolactin adenoma in acromegaly. METHODS: We studied 38 patients with acromegaly (22 males and 16 females, mean age 40.7 years) who were underwent surgical removal of pituitary adenomas by TSA from January 1995 to February 1998. We performed immunohistochemical staining in these tumors using avidinbiotin peroxidase complex method. An adenoma was considered as immunoreactive when above 50 percents of tumor cells were stained with anti-hormonal antibodies. Invasiveness of tumors were evaluated by preoperative MRI findings on the basis of Hardys classification. RESULTS: The frequencies of plurihormonal and GH-prolactin adenomas were 42% and 58%, respectively. Plurihormonal adenoma included an adenoma which was not stained with prolactin, but with GH and other hormones. Prolactin immunoreactivity was found in 97%(37/38) of the tumors. Immunoreactivities to FSH, ACTH, LH, and TSH were found in 37.8%, 13.1%, 2.6% and 2.7%, respectively. There were no significant differences in age, basal serum GH and IGF-1 concentrations between plurihormonal and GH-prolactin adenomas. There were also no significant differences in response to TRH & LH stimulation tests and somatostatin & bromocriptine suppression tests between two groups. There were no differences in radiological invasiveness between two groups (plurihormonal adenoma, grade I 2, grade II 3, grade III 7, grade IV 4; GH-prolactin adenoma, grade I 3, grade II 6, grade III 9, grade IV 4). CONCLUSION: Plurihormonal adenomas were 44% and immunoreactivity to prolactin was 97% in pituitary adenomas in acromegaly. There were no significant differences in clinical parameters and radiological invasiveness between plurihormonal and GH-prolactin adenomas in acromegaly.
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Small Medullary Thyroid Cancer Dectected by Genetic Mutation Screening in Men IIa Family.
Jae Hoon Chung, Kwang Won Kim, Ji Eun Kim, Byoung Joon Kim, Sung Hoon Kim, Kyung Ah Kim, Myung Sik Lee, Moon Gyu Lee
J Korean Endocr Soc. 1998;13(2):230-239.   Published online January 1, 2001
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Multiple endocrine neoplasia (MEN) Ila is an inherited disease characterized by the development of medullary thyroid carcinoma, pheochromocytoma and hyperparathyroidism. It has been shown to be associated with germ-line mutatians in the RET proto-oncogene. Presymptomatic screening of medullary thyroid carcinoma in MEN IIa families enables the early diagnosis of this tumor with its significant morbidity, We describe a 19-year-old woman fmm a MEN IIa family who was founded by DNA analysis to be a gene carrier of MEN IIa and then was diagnosed, using a pentagastrin stimulation test, as having presymptomatie medullary thyroid carcinoma She underwent thyroidectomy and histologic examination confirmed medullary thyroid carcinoma. It is cancluded that direct genetic analysis for mutations in the RET proto-oncogene should be the diagnstlc test of choice for identifying family members at risk for MEN IIa and thyroidectomy on the basis of genetic analysis is a rational course of action.
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Insulin Like Growth Factor-I and Insulin Like Growth Factor Binding Protein-3 in Human Thyroid Cystic Fluids.
In Myung Yang, Jeong Taek Woo, Sung Woon Kim, Jin Woo Kim, Young Seol Kim, Young Kil Choi, Byoung Joon Kim, Seung Joon Oh
J Korean Endocr Soc. 1995;10(4):395-404.   Published online November 7, 2019
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In the thyroid tissue, thyrotrophin(TSH) and IGF-I played major role of the goitrogen. But the evidences and precise mechanism of these two factors were not known so much. Actually local secretion of thyroid IGF-I was originated from its fibroblasts mainly. We guessed major roles of IGFs in the thyroid tissue were local paracrine effect of thyroid cells proliferation and differentiation which concert with TSH. Recently, some reporters described the source of thyroid IGF-I were partly from thyroid follicular cells and its action were synergistic with TSH. We measured TSH, IGF-I and IGFBP-3 from sera and thyroid cystic fluids in 36 patients with simple thyroid cyst and examined into correlation between TSH, IGF-I and IGFBP-3.1) According to cyst/serum TSH ratio, we classified two groups(Group I; c/s TSH <1, n=19. Group II; c/s TSH >1, n=17). This classification criteria means that cystic TSH level were increased than that of serum or not.2) The serum TSH, IGF-I and IGFBP-3 levels are not difference between group I and II.3) Cystic TSH were dependent on the serum TSH in Group I, but negative correlation in Group II. In Group II, cystic TSH was significant increased.4) Serum IGF-I were positive correlation in each Group5) In Group II, cystic IGF-I was not exceed than those of serum IGF-I, but some cystic IGFBP-3 were more increased than those of serum.6) In Group II, cystic IGFBP-3 increased than serum TSH, and cystic IGFBP-3 was positive correlation with cystic TSH and cystic IGF-I.As these data suggested that cystic TSH and cystic IGF-I levels may influence cystic IGFBP-3 level. The main effect for maintenance of cyst was mediated by cystic TSH and cystic IGFBP-3. But the cystic IGFBP-3 has major role for thyroid cyst than cyst TSH.
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Endocrinol Metab : Endocrinology and Metabolism