Value of routine sigmoidoscopic examination.
D000230:Adenocarcinoma / Q000175:diagnosis*; D000328:Adult; D000368:Aged; D002277:Carcinoma / Q000175:diagnosis*; D003110:Colonic Neoplasms / Q000175:diagnosis*; D006801:Humans; D008875:Middle Aged; D011127:Polyps / Q000175:diagnosis*; D012004:Rectal Neoplasms / Q000175:diagnosis*; D012811:Sigmoid Neoplasms / Q000175:diagnosis*; D012812:Sigmoidoscopy