colon adenoma colon sessile serrated adenoma/polyp colon SSA MEDGEN:474424 UMLS:C3272791 colon sessile serrated adenoma/polyp A polyp that arises from the colon. It is characterized by the presence of serrated glands and the absence of generalized dysplasia. Some authors have suggested that it is a precursor lesion for some colonic adenocarcinomas with microsatellite instability. EFO:1000189 colon SSA/P colon SSP colon sessile serrated adenoma colon sessile serrated polyp MONDO:0006156 NCIT:C96464 colorectal sessile serrated adenoma/polyp polyp of colon