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目的：探讨慢性阻塞性肺病（ＣＯＰＤ）并发肺癌肺功能改变。方法：采用美国麦加菲公司生产的肺功能检测仪分别对２５例ＣＯＰＤ并发肺癌，５０例ＣＯＰＤ，２５例正常对照实施肺功能检测。结果：ＣＯＰＤ并发肺癌及单纯ＣＯＰＤ患者肺功能均较正常对照损伤严重，而ＣＯＰＤ并发肺癌弥散功能较ＣＯＰＤ患者下降明显（Ｐ＜０．０５）。结论：动态观察ＣＯＰＤ肺功能情况，在肺功能下降的基础上，发现弥散功能下降明显，应考虑并发肺癌可能
Objective: To investigate the pulmonary function of patients with chronic obstructive pulmonary disease (COPD) complicated by lung cancer. Methods: Pulmonary function tests were performed on 25 patients with COPD complicated with lung cancer, 50 patients with COPD and 25 controls. Results: The lung function of patients with COPD complicated with lung cancer and simple COPD was more severe than that of normal controls. The diffusing capacity of lung cancer with COPD was significantly lower than that of COPD patients (P <0.05). Conclusions: Dynamic observation of lung function in COPD, the decline in lung function, based on the discovery of significant decline in diffuse function should be considered concurrent lung cancer may