胸腔积液良恶性的鉴别诊断一直是临床医生研究的重要课题。1983年1月至1985年12月,我院呼吸科病房共收治917人,其中胸腔积液病例为184人,占住院总人数的20.6%。在184例胸腔积液中各种类型胸腔积液所占比例为:结核性80.4%,癌性9.87%,肺炎后4.89%,漏出液4.89%。目前,在我国临床上渗出液最重要的是区别癌性 Differential diagnosis of benign and malignant pleural effusion has been an important issue for clinicians. From January 1983 to December 1985, a total of 917 respiratory wards were admitted to our hospital, of which 184 were pleural effusion cases, accounting for 20.6% of the total number of hospitalized patients. In 184 cases of pleural effusion in various types of pleural effusion accounted for: tuberculosis 80.4%, cancerous 9.87%, 4.89% after pneumonia, 4.89% leakage of fluid. At present, the most important clinical exudate in our country is the difference between cancerous