弥漫性肺间质纤维化(Diffuse Interstitial Fibrosis,DIF),临床易与肺结核混淆。现将本院1982年11月收治的1例报告如下并结合文献进行讨论。病人男 52岁干部咳嗽、血痰,伴气促进行性加重6年。1976年10月因畏寒、发热、血痰。于卫生院胸透示双肺多数散在大小不等斑点状致密阴影。临床诊断为肺结核,予以SM、INH、RFP等抗结核化疗无效,病情逐渐进展出现气促并呈进行性加重。1982年11月因伴咳嗽、发冷发热转入本院。既往无粉尘及有害 Diffuse Interstitial Fibrosis (DIF), clinically confused with tuberculosis. Now this hospital in November 1982 admitted to a case of the following report in combination with the literature. Male 52-year-old cadres cough, bloody sputum, with gas to promote sexual intercourse increased six years. October 1976 due to chills, fever, bloody sputum. In the hospital, chest showed that most of the lungs scattered in the spot size dense shadow. Clinical diagnosis of tuberculosis, to SM, INH, RFP and other anti-tuberculosis chemotherapy is invalid, the progress of the disease appears to be shortness of breath and was progressive increase. In 1982 November with cough, fever transferred to the hospital fever. No dust and harmful past