Familial adenomatous polyposis other imaging findings

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Other Imaging Findings

Making the diagnosis of FAP before the development of colon cancer is important insofar as not only the individual but also affected family member's survival is at stake.

Colonoscopy

Colonoscopy is considered the diagnostic test of choice as it can provide not only a quantification of polyps throughout the colon but also a histologic diagnosis.Once the diagnosis of FAP is made, close colonoscopic surveillance with polypectomy is required. Prophylactic colectomy is indicated if more than a hundred polyps are present, there are severely dysplastic polyps, or multiple polyps larger than 1 cm are present. When partial colectomy is performed, colonoscopic surveillance of the remaining colon is necessary as the individual still carries significant risk of developing colon cancer.

Barium Studies

Barium enema and virtual colonoscopy can suggest the diagnosis of FAP.