颅内脑膜瘤MRI表现与病理分型的关系

Comparative study of intracranial meningiomas between MRI findings and pathological types

目的 :探讨颅内脑膜瘤的MRI表现及与病理学分型的关系。方法 :收集 32例手术和病理证实的脑膜瘤 ,将MRI表现与病理对照分析。结果 :32例均为单发病灶 ,位于颅内额、顶、枕区域脑凸面 18例 ,蝶骨嵴 8例 ,嗅沟 4例 ,鞍区 2例。其中表现肿瘤包膜完整者 13例 ,瘤周水肿 2 9例 ,硬膜“尾”征 9例 ,瘤内钙化 3例 ,血管流空信号 5例 ,均匀强化 2 0例。结论 :MRI对脑膜瘤定位有很大价值 ,综合考虑各种MRI征象 ,可以提示为相应的病理类型。

Objective:To evaluate the relationship between MRI features and pathological types of intracranial meningomas.Methods:32 cases of meningoma which were proved by operation and pathology were compared with their MRI features and pathological types.Results:All of the 32 cases were single tumor,The lesions were located in frontal,parietal,and occipital regions nearby the convexity of the brain in 18 cases,at sphenoidal crest in 8 cases,at olfactory sulcus in 4 cases,and in sellar region 2 cases.MRI manifested that 13 cases had their intergral capsules,peri-tumor edema was found in 29 cases,dural“tail” sign was present in 9 cases,calcification in the tumors were found in 3 cases and vascular flow void features was seen in 5 cases,20 cases appeared homogeneous enhancement.Conclusion:It is of great value in presenting the location of meningoma with MRI.Combination of several MRI features could be used to figure out the pathological type of meningoma by a comprehensive analysis.