肺血管外皮瘤的影像学诊断

目的　探讨肺血管外皮瘤的影像学表现。方法　分析 3例经病理证实的肺血管外皮瘤的CT、MRI表现。结果　 3例患者均表现为肺内单发的巨大肿块 ,CT平扫示密度不均匀 ,强化扫描示肿块实质明显强化 ,并可以见到其中异常强化的血管影。MRI平扫示肿块信号不均匀 ,并可以见到血管流空征象。结论　肺内单发的巨大肿块 ,CT强化扫描见到异常强化的血管 ,MRI扫描见到血管流空征象 ,可以高度提示肺血管外皮瘤的诊断

Imaging Diagnosis of Primary Pulmonary Hemangiopericytoma

Objective To analyze the imaging features of primary pulmonary hemangiopericytoma,and to provide a helpful method for clinical diagnosis.Methods Retrospectively analyze the CT and MRI characteristics of 3 cases with pathologically proved primary pulmonary hemangiopericytomas.Results All cases manifested as solitary massive tumors.On plain CT scans,the tumors were heterogeneous,well and sharply circumscribed.On contrast-enhanced CT scans,the tumors were apparently enhanced and the abnormally enhanced vasculars could be seen.On MRI scans,the tumors had inhomogeneous signal intensity and the vascular flowing-void effect could be seen.Conclusion Solitary tumor of massive volume,abnormally enhanced vasculars on contrast-enhanced CT and the vascular flowing-void effect on MRI are imaging features of primary pulmonary hemangiopericytomas.