Preoperative and postoperative colonoscopy for colorectal carcinoma.
D003110:Colonic Neoplasms / Q000175:diagnosis*; D004724:Endoscopy; D006801:Humans; D007417:Intestinal Polyps / Q000175:diagnosis*; D011182:Postoperative Care; D011300:Preoperative Care; D012004:Rectal Neoplasms / Q000175:diagnosis*