title: [Carcinoembryonic antigen in bronchoalveolar lavage fluids in the diagnosis of lung cancer].
abstract: A radioimmunoassay was used for a comparative study of CEA concentrations in the blood serum and bronchoalveolar washes-off in patients with lung cancer (27) and nontumorous lung disease (with bronchitis-14, pneumonia-18, tuberculosis-11, disseminated processes of nontumorous etiology.-12) and in persons without lung pathology (7). Diagnostic sensitivity of CEA determination in the washes-off was 89%, in the blood serum 33%; the specificity was 86 and 56.5%, respectively. The resultant diagnostic accuracy using washes-off was 86%, i.e. almost twice as high as compared to the blood serum (44.7%). Such a high accuracy in CEA determination in the bronchoalveolar washes-off provides an opportunity to use the method for differential diagnosis in unclear cases and for defining groups at high risk of developing lung cancer. The combination of a high level of CEA with unfavorable signs like basal cell hyperplasia, epidermoid metaplasia necessitate patients' follow-up.
mesh_terms: D000328:Adult; D002272:Carcinoembryonic Antigen / Q000032:analysis*; D003581:Cytodiagnosis / Q000379:methods; D006801:Humans; D008175:Lung Neoplasms / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D007507:Therapeutic Irrigation
chemical_list: D002272:Carcinoembryonic Antigen
vernacular_title: Rakovo-émbrional'nyĭ antigen bronkhoal'veoliarnykh smyvov v diagnostike raka legkogo.