脑膜瘤的CT表现与病理对照研究

目的探讨脑膜瘤的CT表现与病理分型之间的关系。方法收集经CT诊断和手术病理证实的脑膜瘤12例,CT检查均采用增强前后常规扫描,病理为手术巨检和切片光镜下所见。结果典型脑膜瘤为过渡型或纤维母细胞型脑膜瘤,密度(信号)均匀,明显均匀强化,15%~20%伴有钙化,无或轻度瘤周水肿。不典型脑膜瘤以合胞体和血管母细胞瘤型脑膜瘤为主,密度(信号)不均匀,无或不均匀强化,瘤周水肿较重。恶性脑膜瘤为混杂密度(信号)肿块,强化不均匀,形状不规则,瘤周水肿明显,伴有骨质破坏。结论CT平扫 增强是诊断脑膜瘤的最主要方法,准确率为95%,在一定程度上可提示脑膜瘤的病理学分型,为术前选择手术方案及判定预后提供信息。

Contrast Research between CT Manifestation and Pathological Analysis of Meningioma

Objective To discuss the relationship between CT manifestation and pathological typing.Methods 12 cases with meningioma were diagnosed by CT and identified by pathology during operation;Routine CT scanning was given before and after reinforcement,pathological heavy check and section were made.Results Typical meningioma were transitional type or just fibroblast meningioma,the density was uniform,15% to 20% of the cases showed calcification,without or with slight edema around the tumor.The atypical meningioma were plasmodim and angio-blascell,their density were not uniform,and with heavy edema around the tumor.The manifestation of malignant meningioma was mixed density mass with heterogeneous reinforcement,irregular shape,heavy edema around the tumor and bone damage.Conclusion CT scanning with reinforcement is the main method in diagnosing meningioma with the accurate rate of 95%,it can suggest the pathological typing of meningioma and provide proof for operation method selection and prognosis criterion.