Methods: Analyzing 14 cases of parapneumonic effsion complicated empyema and reviewing the related literatures.
方法：结合文献资料回顾分析14例临床病例。
2
Methods The pleural effusion samples were collected from 30 patients with malignant pleural effusion, 18 patients with tuberculous pleural effusion and 23 patients with parapneumonic effusion.