title: [Three cases of colonic-type adenocarcinoma in the head and neck region with positive CEA].
abstract: Adenocarcinoma arising in the head and neck region is found very rarely. Recently, we have experienced 3 cases of papillary adenocarcinoma (2 of paranasal sinus and 1 of epipharyngeal origin) with a histological similarity to colon cancer. Histochemical study of CEA by the PAP method was positive in all 3 cases, and this resembled colon cancer with respect to the tumor marker. Adenocarcinoma of the colonic type in the head and neck region should be further investigated for tumor characterization including the significance of positive CEA, as this tumor might be regarded as usual adenocarcinoma so far.
mesh_terms: D000230:Adenocarcinoma / Q000276:immunology / Q000473:pathology*; D000328:Adult; D002272:Carcinoembryonic Antigen / Q000032:analysis*; D003110:Colonic Neoplasms / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D006258:Head and Neck Neoplasms / Q000276:immunology / Q000473:pathology*; D006801:Humans; D008297:Male; D008875:Middle Aged
chemical_list: D002272:Carcinoembryonic Antigen