Polyps are abnormal, mushroom-like growths that form on the inside of the digestive tract.
The polyps occur most often in the colon or large intestine. The total length of the colon is approximately 5 feet in the adult and it is responsible for forming, storing, and expelling waste matter. Polyp sizes vary from the size of a pencil point to the size of a quarter. Kids with FAP develop hundreds to thousands of polyps throughout the colon at a young age, usually as a teenager or young adult. The major concern about this condition is that the polyps will become cancerous.