Familial colonic polyps

Familial colonic polyposis belongs to adenomatous polyp syndrome. It is an autosomal dominant genetic disease. It is occasionally seen in people without family history. Multiple adenomas can be found in the whole colon and rectum. Most adenomas have pedicles, and papillary shape is rare. The number of polyps ranges from about 100 to thousands, ranging from soybean size to several centimeters in diameter. It is often densely arranged, sometimes in clusters, and its tissue structure is the same as that of general adenomas.