Prophylactic surgery for cancer of the colon and rectum.
D003082:Colectomy; D003093:Colitis, Ulcerative / Q000601:surgery; D003108:Colonic Diseases / Q000601:surgery*; D003110:Colonic Neoplasms / Q000517:prevention & control*; D004238:Diverticulitis / Q000601:surgery; D006801:Humans; D011127:Polyps / Q000601:surgery; D012002:Rectal Diseases / Q000601:surgery*; D012004:Rectal Neoplasms / Q000517:prevention & control*