disease has location polyp hyperplastic polyp MONDO:0006249 HP A polyp found mainly in the stomach and colon. Microscopically, it is characterized by elongated, serrated crypts lined by proliferative epithelium. Hyperplastic polyps are traditionally considered non-neoplastic, but ras mutation is common, clonality has been demonstrated and biochemical abnormalities and epidemiological associations that occur in colorectal adenomas and carcinomas have been found (WHO Tumors of the Digestive System, 2000). MEDGEN:87189 MP metaplastic polyp NCIT:C4083 EFO:1000299 UMLS:C0333983 digestive system