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문정석,김혜선,조성진,채양석,염범우,Moon, Jeong-Seok,Kim, Hye-Sun,Cho, Seong-Jin,Chae, Yang-Seok,Yeom, Bom-Woo 대한세포병리학회 1996 대한세포병리학회지 Vol.7 No.2
Medullary carcinoma of the thyroid gland is a malignant neuroendocrine tumor arising from calcitonin producing-parafollicular cells. The tumor is clinically divided into sporadic and familial form, constituting about 80% and 20%, respectively. Recently, we experienced a case of unilateral and solitary sporadic medullary carcinoma of the left thyroid gland. The patient was a 9 year-old female, who presented with a palpable mass on the anterior lateral neck of 8 months duration without any familial and personal history of neuroendocrine disease. The cytopathologic findings showed spindle cells and plasmacytoid cells in the background of colloid-like materal. The nuclei were eccentrically located, mildly hyperchromatic and pleomorphic, showing speckled chromatin pattern without nuclear inclusion or prominent nucleoli. The cytoplasm was abundant and had a pale granular cyanophilic appearance. No amyloid materal could be identified.
귀밑샘의 형질세포와 호산성 조직구를 다량 함유한 림프절외 변연부 B-세포 림프종의 세침흡인 세포검사 소견 -1예 보고-
이영석,안정석,채양석,염범우,최종상,김철환,Lee, Young-Seok,An, Jung-Suk,Chae, Yang-Seok,Yeom, Bom-Woo,Choi, Jong-Sang,Kim, Chul-Hwan 대한세포병리학회 2007 대한세포병리학회지 Vol.18 No.2
The authors present the fine needle aspiration cytology (FNAC) cytologic findings of a case of extranodal marginal zone B cell lymphoma (MZBCL), which featured abundant plasma cells and eosinophilic histiocytes arising in both parotid glands. A 49-year-old female presented with palpable masses in both parotid glands. She had been suffering from systemic lupus erythematosus and rheumatoid arthritis. The lesions were evaluated by FNAC and smears showed a small number of clusters of oncocytic cells with abundant eosinophilic granular cytoplasm and small nuclei, intermixed with small to medium-sized lymphoid cells containing round to lobulated nuclei, which suggested Warthin's tumor. Some of lymphoid cells had a plasmacytoid appearance, and some scattered large cells contained a large amount of eosinophilic cytoplasm. Bilateral superficial parotidectomy was performed and a histopathologic study indicated MZBCL with abundant plasma cells, intermixed with eosinophilic histiocytes. The presence of oncocytic cells and a mixture of lymphoid and plasma cells indicates Warthin's tumor, but the cytologic features of a relatively monotonous small to medium-sized lymphoid infiltrate suggest the possibility of MZBCL in the clinical setting of an FNAC study performed on a patient suffering from a connective tissue disease.
간염, 간경변증 및 간암 조직내 림프구아형 분포에 관한 면역조직 화학적 연구
염범우 고려대학교 의과대학 1991 고려대 의대 잡지 Vol.28 No.2
It is generally believed that the hepatic injury in viral hepatitis is due to cell mediated cytotoxicity. The natural Killer cells have defensive role on viral infection and on malignant neoplasm. In order to evaluate the role of natural killer cells in viral hepatitis, cirrhosis and hepatoma, the author performed immunohistologic study on hepatic lesions with MT1 for T Cells. LN2 for B cells and anti Leu-7 for NK cells. The results are as followings ; 1. In chronic active hepatitis, the natural killer cells are decreased in number compared with those in chronic persistent hepatitis 2. In liver cirrhosis natural killer cells are markedly decreased in number compared with those in chronic hepatitis. 3. In hepatoma, the natural killer cells are increased in unmber. Above results strongly indicated that the natural killer cells have defensive role in progress of viral hepatitis.
염범우,이우정 고려대학교 의과대학 1996 고려대 의대 잡지 Vol.33 No.1
It has been well known that carcinogenesis begins from alteration of specific genes, such as oncogenes and suppressor genes. Although the precise mechanism is still not known, it is generally accepted that oncogenes and suppressor genes are involved not only in carcinogenesis but also in cellular differentiation and proliferation. It is important to know oncogene found in tumors is limited to the oncogenes already presented in fetal tissues. So the author carried out immunohistochemical study with c-neu, c-fos and c-jun antisera on the DDY mouse fetal tissue of 12, 14, 16 and 18 old gestational days. The results are as fol- lows. 1. c-fos protein was present in 16, 18 days old fetal immature cartilage and intestinal mucosa. 2. c-jun protein was noted only on fetal immature cartilage of 16, 18days old fetus. 3. c-neu protein was noted on the fetal liver, intestine, glial tissue skeletal muscle and pancreas after 16days old fetus.
Lectin을 利用한 各種 組織固定液이 組織에 미치는 生化學的變化에 關한 硏究
廉範愚 고려대학교 의과대학 1988 고려대 의대 잡지 Vol.25 No.2
The fixative is an essential for tissue processing in surgical pathology. The best fixative is that it fixes the tissue rapidly and causes the least biochemical changes in-cellular level during fixation. But all fixatives may cause some biochemical changes during fixation. The lectin is plant extract having binding activity with specific carbohydrate terminals And so the lectins are widely used in order to find out the biochemical change in neoplastic cells, fetal tissue and mitotic cells and some lectins are used as cell markers. The author made an experimental study to dissolve whether fixative might change the biochemical composition of skin, liver, kidney and spleen using with 8 lectins by ABC method. The fixatives used are Boum's solution, neutral and acid formalin, ethyl alcohol and Zenker's solution. The results are followings; 1. The epidermis of skin fixed in alcohol revealed the strongest positive reaction to PNA and Zenker's solution to PTA. 2. The renal tubular epithelial cells fixed in ethyl alcohol revealed the strongest positive reaction to PNA, DBA, Con A, SBA and RCA-Ⅰ. 3 The lymphocyte of spleen fixed in alcohol and Boum's solution showed the positive reaction to PNA.
인체 태아 및 성인 세포에서의 c-myc, c-H-ras 및 EGF 항혈청에 대한 면역조직학적 연구
염범우 고려대학교 의과대학 1994 고려대 의대 잡지 Vol.31 No.2
The exact nature of carcinogenesis is still debatable, however the discovery of oncogenes and suppressor genes encouraged the frontiers to explain the pathogenesis of malignant change. In general, the oncogenes and suppressor genes are believed to involve in cellular transformation but now it is also believed that these genes also have the role of normal cell proliferation and differentiation. So the author performed this experimental study to find out the presence of c-myc, c-H-ras and EGF protein in the liver, stomach and kidney of fetuses of variable gestational age, new born infants and adults. The results are as follows: 1. c-myc antisera revealed highest positive ratio in the liver of fetuses and newborn infant. 2. c-H-ras antisera revealed highest positive ratio in the stomach of fetuses and newborn infant. 3. EGF antisera revealed positive ratio in the liver and stomach in 9 and 5 cases.