title: Ulcerative colitis and rectal carcinoma.
mesh_terms: D000293:Adolescent; D000328:Adult; D003082:Colectomy; D003093:Colitis, Ulcerative / Q000150:complications* / Q000601:surgery; D006801:Humans; D012004:Rectal Neoplasms / Q000209:etiology*; D012007:Rectum / Q000601:surgery