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目的探讨老年人恶性胸腔积液的临床特点。方法对老年胸腔积液患者５７例和非老年患者３７例进行流行病学，临床表现，Ｘ线形态等方面的比较，观察其临床特点。结果恶性组男性多于女性。吸烟时间的长度和吸烟量与发生肺癌的危险性相关。６０～７９岁是恶性胸腔积液的高发年龄。血性胸液抽液后增长快非抗癌治疗无效。结论老年胸腔积液恶性病变比例高于良性病变。临床上应重视作Ｘ线和痰细胞学，纤支镜或胸部ＣＴ等检查，以提高老年恶性胸腔积液的早期诊断率。
Objective To investigate the clinical features of malignant pleural effusion in the elderly. Methods Fifty-seven elderly patients with pleural effusion and 37 non-elderly patients were compared in terms of epidemiology, clinical manifestations and X-ray findings, and the clinical features were observed. Results Malignant group of men than women. The duration of smoking and the amount of smoking associated with the risk of developing lung cancer. 60 to 79 years old is the high incidence of malignant pleural effusion age. After bloody chest fluid pumping fast anti-cancer treatment is not effective. Conclusion The proportion of malignant pleural effusion in elderly patients is higher than that of benign ones. Clinic should pay attention to X-ray and sputum cytology, bronchoscopy or chest CT examination to improve the early diagnosis of malignant pleural effusion in elderly.