血管瘤型脑膜瘤MRI表现及临床病理对照  

Intracranial Angiomatous Meningioma：Comparative Analysis of MRI Findings and Clinical Pathology

作　　者：侯刚强[1] 张小静[1] 熊伟[1] 张雪林[1] 

机构地区：[1]南方医科大学南方医院影像中心,广东广州510515

出　　处：《实用放射学杂志》2011年第2期166-168,172,共4页Journal of Practical Radiology

摘　　要：目的探讨血管瘤型脑膜瘤的MRI特点。方法收集12例经手术病理证实的颅内血管瘤型脑膜瘤，回顾性分析其MRI特点及病理学表现。结果1例位于小脑幕，T1WI呈略高信号，T2WI呈等信号；1例位于右侧颞叶内；1例位于右侧侧脑室，1例位于左侧桥小脑角区，余8例位于大脑半球凸面，病灶均呈长T1长T2信号，增强扫描明显强化。病灶内可见流空血管信号影，无钙化灶，1例可见出血灶，3例发生坏死、囊变，9例可见瘤周水肿。结论血管瘤型脑膜瘤具有较特征性的MRI表现。Objective To study MRI features of intracranial angiomatous meningioma. Methods MRI findings and pathological manifestations of 12 patients with intracranial angiomatous meningioma confirmed by pathology were retrospecively reviewed. Results The lesions in 12eases were located in the tentorium of cerebellum （1）, right temporal lobe （1）, right lateral ventricle（ 1）, left cerebellopontine angle （1） and convexity of brain（8} respectively. On pre--contrast MRI, the case located in the tentorium of cere- bellum showed a little hyperintensity on T1 WI and isointensity on Tz WI,other cases showed hypointensity on T1 WI and hyperintensity on T2 WI. The lesions demonstrated strong enhancement at post--contrast imaging. 1 case revealed intratumoral hemorrhage, 3 cases revealed necrosis and cystic degeneration. 9 cases had peritumoral edema. Conclusion MRI characteristics of intracranial angiomatous meningiomas are specificity which can provide valuable diagnostic informations.

关 键 词：脑 脑膜瘤 血管瘤型 磁共振成像 

分 类 号：R739.45[医药卫生—肿瘤] R445.2[医药卫生—临床医学]