特发性肺弥漫性纤维化是一种原因未明的肺疾患，据统计，确诊后经现有治疗５年生存率低于５０％，１０年生存率低于３０％犤１，２犦。为提高对特发性肺弥漫性纤维化的CT表现的认识，现将我院今年遇到的４例病例汇报如下：１临床资料例１，男，３６岁，傣族，以受凉后咽痛、咳 Idiopathic pulmonary diffuse fibrosis is an unexplained lung disease, according to statistics, after the diagnosis of 5-year survival rate of existing treatment by less than 50%, 10-year survival rate of less than 30% 犤 1,2 犦. In order to improve the understanding of CT findings of idiopathic pulmonary diffuse fibrosis, we report the following four cases encountered in our hospital this year: 1 Clinical data Example 1, male, 36 years old, Dai, with cold sore throat, cough