Familial adenomatous polyposis (FAP) is an inherited disorder characterized by the development of numerous adenomatous polyps in the colon and rectum. These polyps typically begin to appear during the teenage years and, if left untreated, have a near 100% risk of progressing to colorectal cancer. The condition is caused by mutations in the APC gene, which plays a crucial role in regulating cell growth and apoptosis.
