Familial Adenomatous Polyposis By Minhhuyen Nguyen, MD, Fox Chase Cancer Center, Temple University Reviewed / Revised Mar 2021 | Modified Sep 2022 View Patient Education Symptoms and Signs Diagnosis Treatment Key Points More Information Topic Resources Familial Adenomatous Polyposis Familial adenomatous polyposis is a hereditary disorder causing numerous colonic polyps and frequently resulting in colon carcinoma, often by age 40.