Diagnosis of cancer of colon and rectum.
D002272:Carcinoembryonic Antigen / Q000032:analysis; D003110:Colonic Neoplasms / Q000175:diagnosis*; D006801:Humans; D012004:Rectal Neoplasms / Q000175:diagnosis*; D012812:Sigmoidoscopy
D002272:Carcinoembryonic Antigen