title: The value of proctosigmoidoscopic examinations.
mesh_terms: D003110:Colonic Neoplasms / Q000175:diagnosis*; D006801:Humans; D007417:Intestinal Polyps / Q000175:diagnosis; D011351:Proctoscopy; D012004:Rectal Neoplasms / Q000175:diagnosis*; D012812:Sigmoidoscopy