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观察４３０例４０岁以上渗出性胸水（ＰＥＥ）的不同病因及其分布。结果显示，在Ａ组（４０～５９岁）中结核仍是主要病因（６１．０％）；而在Ｂ组（≥６０岁）则以肿瘤为主（７２．２％）。在胸膜转移瘤中，以支气管肺癌最常见，其次为血液系统恶性肿瘤。从而提示ＰＥＥ在４０岁以上患者中病因的流行病学变化趋势可能主要受结核性胸膜炎发病年龄的上升及肺癌、造血系统恶性肿瘤发病率快速增高的影响。
To observe the different etiology and distribution of 430 cases of exudative pleural effusion over 40 years old (PEE). The results showed that tuberculosis was still the major cause (61.0%) in group A (40-59 years), while tumors (72.2%) were mainly in group B (≥60 years). In pleural metastases, the most common bronchogenic carcinoma, followed by hematological malignancies. This suggests that the etiological trend of PEE in patients over 40 years of age may be mainly affected by the rising age of tuberculous pleurisy and the rapid increase of the incidence of lung cancer and hematopoietic malignancies.