Below are some helpful Internet resources on this topic. Mayo Clinic does not own or control any of these sites and is not responsible for their content. Inclusion of these sites does not imply endorsement by Mayo Clinic.
National Institutes of Health Genetic and Rare Diseases Information Center
National Institutes of Health Genetics Home Reference: Familial Adenomatous Polyposis
National Center for Biotechnology Information: APC-Associated Polyposis Conditions