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Korean J Gastroenterol. 2004 Oct;44(4):206-211. Korean. Original Article.
Kim SH , Lee JH , Kang KH , Park JH , Park CK , Cho CM , Kweon YO , Kim SK , Choi YH , Bae HI , Kim MS .
Department of Internal Medicine, Kyungpook National University College of Medicine, Daegu, Korea.
Department of Pathology, Kyungpook National University College of Medicine, Daegu, Korea.

BACKGROUND/AIMS: Recent studies have shown that cyclooxygenase-2 (COX-2) may be involved in the process of invasion, growth and apoptosis in colorectal carcinoma and in the growth and tumorigenesis in familial adenomatous polyposis. This study was conducted to determine the significance of the expression of COX-2 in gastric and colorectal adenomas. METHODS: Forty-nine samples of gastric adenoma and fifty-seven samples of colorectal adenoma were obtained by endoscopic mucosal resection or polypectomy from 106 patients from January 2000 to July 2003. COX-2 expression was determined by immunohistochemistry. Correlation between COX-2 expression and several clinical factors were compared in each gastric and colorectal adenomas. RESULTS: The expression of COX-2 in epithelial cells was significantly higher in the group with large adenoma (>1 cm) compared with the group with small adenoma (

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