OBJECTIVE: Evaluate the capacity of the convencional videocolonoscopy (without image magnification) with chromoscopy (indigo carmin) to establish the histologic diagnosis of colorectal polyps. METHODS: One hundred colorrectal polyps were classified in the videocolonoscopy according to their pattern of cripts and submitted to histological evaluation for later correlation. RESULTS: nineteen per cent of the adenomatous polyps were classified during colonoscopy as normal or hyperplastic. Eighty one per cent of the polyps were diagnosed correctly or "overdiagnosed" in the videocolonoscopy. None malign polyp were classified incorrectly. CONCLUSION: The conventional videocolonoscopy with chromoscopy is not a secure method to differentiate neoplastic from non-neoplastic polyps. Colorectal polyps diagnosed through conventional videcolonoscopy must be removed and submitted to histological study.
Colorectal polyps; videocolonoscopy; histology; endoscopic diagnose; histological diagnose
