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目的:探讨颅内血管外皮细胞瘤的MRI及CT影像学特点,以提高诊断水平。材料和方法:回顾性分析经手术病理证实的颅内血管外皮细胞瘤4例。4例均行MRI扫描,其中2例并行CT扫描。结果:4例血管外皮细胞瘤分别位于前、中颅窝、右侧桥小脑角区及右顶部各1例,均呈明显分叶状。T1WI示肿瘤呈高或等、低混杂信号,T2WI示肿瘤呈等或等、高混杂信号。增强扫描示肿瘤实性部分高度增强,其中4例肿瘤周边均可见不同程度水肿带,3例见流空血管影,1例肿块内见坏死囊变灶、1例邻近颅骨骨质破坏,1例见幕上轻度脑积水。CT平扫示肿瘤呈高密度,未见瘤内钙化、邻近颅骨骨质增生及脑膜尾征等脑膜瘤常见征象。结论:MRI及CT表现对颅内血管外皮细胞瘤的诊断有一定的作用,最终诊断依靠病理。
Objective: To investigate the MRI and CT features of intracranial hemangiopericytoma in order to improve the diagnostic level. Materials and Methods: Four cases of intracranial hemangiopericytoma confirmed by surgery and pathology were retrospectively analyzed. 4 cases were performed MRI scan, including 2 cases of parallel CT scan. Results: Four cases of hemangiopericytoma were located in the anterior, middle cranial fossa, right cerebellopontine angle area and the right top of 1 cases, were significantly lobulated. T1WI showed tumors were high or low, mixed signals, T2WI showed tumors were equal or equal, high mixed signal. Enhanced scan shows a substantial increase in the solid part of the tumor, of which 4 cases were visible around the tumor with varying degrees of edema, 3 see the flow of empty blood vessels, necrosis of the cyst in 1 case, 1 case of adjacent skull bone destruction, 1 case See the curtain mild hydrocephalus. CT scan showed high-density tumors, no tumor calcification, adjacent skull bone hyperplasia and meningeal signs and other common signs of meningioma. Conclusion: MRI and CT manifestations of intracranial hemangiopericytoma have a certain role in the diagnosis, the final diagnosis depends on the pathology.