adenomatous polyposis coli

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Multiple adenomatous polyps of the cecum are seen here in a case of familial polyposis.

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This adenomatous polyp has a hemorrhagic surface (which is why they may first be detected with stool occult blood screening) and a long narrow stalk. The size of this polyp--above 2 cm--makes the possibility of malignancy more likely, but this polyp proved to be benign.

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This is familial polyposis in which the mucosal surface of the colon is essentially a carpet of small adenomatous polyps. Of course, even though they are small now, there is a 100% risk over time for development of adenocarcinoma, so a total colectomy is done, generally before age 20.

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