hyperplastic polyposis syndrome polyp of colon colon serrated polyposis GARD:0026126 UMLS:C3272797 MONDO:0100290 NCIT:C96470 MEDGEN:474430 The presence of multiple serrated polyps in the colon. The polyps are predominantly sessile serrated adenomas/polyps. A minority of the polyps are microvesicular variants of hyperplastic polyps. According to some authors, the polyps are proximal to the sigmoid colon. According to others, the polyps are distributed throughout the entire colon.