<unk>  is a premalignant type of polyp found in the colon, often in the distal colon (sigmoid, rectum).<unk> s are a type of serrated polyp, and may occur sporadically or as a part of serrated polyposis syndrome.<unk> s are relatively rare, accounting for less than 1% of all colon polyps. Usually,<unk> s are found in the distal colon and are usually less than 10 mm in size. __TOC__
Traditional serrated adenoma
Sessile serrated lesion
Hyperplastic polyp
Inverted papilloma
Atypical adenomatous hyperplasia
Juvenile polyp
Carcinoma in situ
Ductal carcinoma in situ