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比较几种方法对３０例胸腔积液的病因诊断价值。发现胸膜活检术简便易行、安全可靠；胸液结核菌脱氧核糖核酸聚合酶联反应具有快速、高灵敏、高特异性；胸液癌胚抗原检测对初步鉴别结核或肿瘤所致胸腔积液有实用价值；测定胸液／血乳酸脱氢酶和胸液沉渣找癌细胞及结核杆菌和结核杆菌培养，其实用价值有限。
To compare the etiological diagnosis of 30 cases of pleural effusion. Pleural biopsy was found to be simple, safe and reliable; pleural fluid tuberculosis DNA polymerase polymerase chain reaction with fast, highly sensitive, high specificity; pleural fluid carcinoembryonic antigen test for the initial identification of tuberculosis or tumor-induced pleural effusion have Practical value; Determination of pleural fluid / blood lactate dehydrogenase and pleural effusion to find cancer cells and Mycobacterium tuberculosis and Mycobacterium tuberculosis culture, its practical value is limited.