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目的总结颅内血管外皮细胞瘤(hemangiopericytoma,HPC)的影像表现,提高其诊断准确性。资料与方法回顾性分析3例经手术病理证实的颅内HPC的MRI表现,均行MRI平扫及增强,其中女2例,男1例,年龄44~62岁,平均52.7岁。结果 3例HPC呈类圆形或不规则形肿块,均位于硬膜。2例边界清晰,1例边界不清。MRI表现为T1WI呈等、略低信号,T2WI呈稍高信号,信号均匀或混杂。3例均可见血管流空信号。增强扫描显著强化。2例病理表现为WHOⅡ级,1例为WHOⅢ级。结论颅内HPC的MRI表现有一定特点,多位于硬膜,总结其影像表现可提高其诊断准确性。
Objective To summarize the imaging manifestations of intracranial hemangiopericytoma (HPC) and improve its diagnostic accuracy. Materials and Methods Three MRI findings of intracranial HPC confirmed by surgery and pathology were retrospectively analyzed. Both of them were performed MRI plain scan and enhancement, including 2 males and 1 male, aged from 44 to 62 years (average 52.7 years). Results 3 cases of HPC were round or irregular shaped mass, are located in the dura. Two cases of clear boundary, one case of the border is unclear. MRI showed T1WI was equal, slightly lower signal, T2WI was slightly higher signal, the signal is uniform or mixed. 3 cases were visible vascular flow signal. Enhanced scan significantly enhanced. 2 cases showed WHO grade II and 1 WHO grade III. Conclusion Intracranial HPC has some characteristics of MRI manifestations, mostly in the dura, and its imaging performance can be summarized to improve the diagnostic accuracy.