source: National Organization for Rare Disorders
Randall W. Burt; Kory Jasperson
Familial adenomatous polyposis affects males and females in equal numbers. It occurs in approximately one in 5,000 to 10,000 individuals in the United States and accounts for about 0.5% of all cases of colorectal cancer. One estimate suggests that familial adenomatous polyposis affects 50,000 American families. According to national registries, familial adenomatous polyposis occurs in 2.29-3.2 per 100,000 individuals.