临床上经常见到胸部X线检查时发现肺门阴影异常或肺门阴影增大的患者,但病因确诊往往比较困难。本文就我院呼吸内科自1991年3月～1997年5月因胸片显示肺门阴影异常或增大住院患者中,资料较为完整的89例进行分析,并对有关病因的鉴别诊断进行初步讨论,以供同道参考。1　临床资料1 Clinically often see the chest X-ray examination found hilar abnormalities or hilar shadow increased patients, but the diagnosis of the cause is often more difficult. This article on our hospital respiratory medicine from March 1991 to May 1997 due to chest X-ray showed hilar abnormalities or increase hospitalized patients, the data is more complete analysis of 89 cases, and the differential diagnosis of the etiology of the preliminary discussion , For fellow reference. 1 clinical data 1