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Prevalence of microscopic colitis in patients with diarrhea of unknown etiology in Turkey

World Journal of Gastroenterology 2008年第27期14卷 4319-4323页

作者： Levent Erdem Sadιk Yιldιrιm Nihat Akbayιr Banu Yιlmaz necati yenice Orhan Sami Gültekin nder Peker Department of Gastroen-terology Sisli Etfal Teaching and Research Hospital Department of General Surgery Sisli Etfal Teaching and Research Hospital Department of Pathology Sisli Etfal Teaching and Research Hospital Department of Gastroenterology Okmeydanι Teaching and Research Hospital Endotιp Private Endoscopy Center Department of Pathology Haydarpasa Numune Teaching and Research Hospital

AIM: To investigate the prevalence and demography of microscopic colitis in patients with diarrhea of unknown etiology and normal colonoscopy in Turkey. METHODS: Between March, 1998 to July, 2005, 129 patients with chronic non-bloody diarrhea of unexplained etiology who had undergone full colonoscopy with no obvious abnormalities were included in the study. Two biopsies were obtained from all colonic segments and terminal ileum for diagnosis of microscopic colitis. On histopathologic examination, criteria for lymphocytic colitis (intraepithelial lymphocyte ≥ 20 per 100 intercryptal epithelial cells, change in surface epithelium, mononuclear infiltration of the lamina propria) and collagenous colitis (subepithelial collagen band thickness ≥ 10 μm) were explored. RESULTS: Lymphocytic colitis was diagnosed in 12 (9%) patients (Female/Male: 7/5, mean age: 45 year, range: 27-63) and collagenous colitis was diagnosed in only 3 (2.5%) patients (all female, mean age: 60 years, range: 54-65).CONCLUSION: Biopsy of Turkish patients with the diagnosis of chronic non-bloody diarrhea of unexplained etiology and normal colonoscopic findings will reveal microscopic colitis in approximately 10% of the patients. Lymphocytic colitis is 4 times more frequent than collagenous colitis in these patients.

关键词： Diarrhea of unknown etiology Microscopiccolitis Lymphocytic colitis Collagenous colitis

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