[The role of pleural needle biopsy and determination of Carcinoembryonic antigen in pleural fluid for diagnosing the etiology of pleural effusion].

Results of histopathological and bacteriological examinations of specimens taken in 213 patients with pleurisy by Abrams' needle biopsy of parietal pleura were presented. Malignant cells were found in histological survey of excisions from pleura in 48/128 patients with final diagnosis of cancer (37.5%). The same examination accompanied by bacteriological survey led to establish proper diagnosis in 41/60 patients with pulmonary tuberculosis (68.3%). In 31 patients with cancer pleural fluid was searched for concentration of the carcinoembryonic antigen (CEA). In this group, in 7/19 patients with negative histological results of pleural biopsy CEA concentrations were markedly increased. This finding strongly supported further searching for malignancy in those cases. Finally, the diagnosis was established due to the pleural needle biopsy in 89/213 patients (41.8%).