恶性胸腔积液指肿瘤直接或间接引起的胸膜通透性增高 ,蛋白渗入胸腔的量大于回吸收量。近年来恶性胸腔积液病例有逐年增加趋势 ,我院 1980年 /2 0 0 0年期间 ,住院恶性胸腔积液488例中误诊 132例 ,皆经病理或细胞学诊断为恶性胸腔积液 ,分析如下。1　临床资料1.1　一般资料　本 Malignant pleural effusion refers to the increased pleural permeability caused by tumors directly or indirectly, and the amount of protein infiltrating into the thoracic cavity is greater than the amount of back osmosis. In recent years, the number of malignant pleural effusions has increased year by year. During the 1980/2000 period, 132 cases of malignant pleural effusions were misdiagnosed in our hospital. All of them were diagnosed as malignant pleural effusions by pathology or cytology. as follows. 1 Clinical data 1.1 General information