title: Role of CEA--a challenge of a verdict.
mesh_terms: D000230:Adenocarcinoma / Q000175:diagnosis; D002272:Carcinoembryonic Antigen / Q000032:analysis; D003110:Colonic Neoplasms / Q000175:diagnosis*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012004:Rectal Neoplasms / Q000175:diagnosis*; D012008:Recurrence; D012811:Sigmoid Neoplasms / Q000175:diagnosis
chemical_list: D002272:Carcinoembryonic Antigen