[Key points in rectosigmoidoscopic examination].
D001003:Anal Canal / Q000033:anatomy & histology; D003110:Colonic Neoplasms / Q000175:diagnosis; D005260:Female; D006801:Humans; D008297:Male; D008722:Methods; D011187:Posture; D012004:Rectal Neoplasms / Q000175:diagnosis*; D012812:Sigmoidoscopy