[On the difficulties in diagnosing cancer of the colon and rectum].
D000368:Aged; D003110:Colonic Neoplasms / Q000175:diagnosis*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007415:Intestinal Obstruction / Q000209:etiology; D008297:Male; D012004:Rectal Neoplasms / Q000175:diagnosis*
A vastag és végbélrákok felismerésének nehézségeiröl.