Tubulo-Villous Adenoma

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added:
13 years ago
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5904
specialty:
Gastroenterology

Case description

Adenomatous polyps are, by definition, neoplastic. Although benign, they are the direct precursors of adenocarcinomas and follow a predictable cancerous temporal course unless interrupted by treatment. They can be either pedunculated or sessile. Adenomas are divided into 3 subtypes based on histologic criteria, (1) tubular, (2) tubulovillous, and (3) villous. According to World Health Organization (WHO) criteria, villous adenomas are composed of greater than 80% villous architecture. Tubular adenomas are encountered most frequently (80-86%) Tubulovillous adenomas are encountered less frequently (8-16%), and villous adenomas are encountered least frequently (5%)

tags: polyp adenoma colonoscopy

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