血管外皮细胞瘤是一种罕见的血管源性恶性肿瘤，约占血管肿瘤的1％，可发生于全身任何部位，原发于肺部的极为罕见。本文对1994～1998年我院收治3例作以下报告。1临床资料例1，女，33岁，主因“间断咳嗽、咯血3月”人院，胸部X线示左肺上叶可见4cmx3cm大小圆形块影，密度均匀， Hemangiopericytoma is a rare angiogenic malignancy that accounts for about 1% of vascular tumors. It can occur in any part of the body and is extremely rare in the primary lung. This article made the following report on 3 cases admitted to our hospital from 1994 to 1998. 1 Clinical data Example 1, female, 33 years old, mainly due to “intermittent cough, hemoptysis 3 months” hospital, chest X-ray shows the left upper lobe 4cmx3cm size circular block shadow, uniform density,