脑膜结核瘤的MR诊断与鉴别诊断

发布时间：2018-05-05 08:41

本文选题：脑膜结核瘤 + 磁共振成像　；参考：《临床放射学杂志》2017年12期

【摘要】：目的探讨颅内脑膜结核瘤MRI特征。方法回顾性分析5例经手术及病理证实的颅内脑膜结核瘤MR表现,着重观察瘤体的形态与在T_2WI、T_1WI增强扫描及扩散加权成像(DWI)上信号特征。结果 5例脑膜结核瘤均沿着脑膜分布并不同程度地向脑实质内浸润,2例病灶主要位于右侧额部脑膜,2例病灶主要位于左侧额部脑膜并累及大脑镰前部脑膜,1例主要位于大脑镰前部脑膜并累及双侧额部脑膜。4例瘤体T_1WI表现为低信号,1例瘤体表现为稍高信号,T_2WI及DWI均表现为低信号,T_1WI增强扫描上表现为均匀高信号,病灶对应部位白质内均见大片状水肿。结论颅内脑膜结核瘤的MRI特征表现为病灶主要沿脑膜生长并局部侵及脑实质,T_2WI及DWI上表现为低信号,T_1WI增强扫描为均匀性强化。
[Abstract]:Objective to investigate the MRI features of intracranial meningioma. Methods Mr findings of 5 cases of intracranial tuberculoma proved by surgery and pathology were retrospectively analyzed. The morphology of the tumor and the signal characteristics on T _ 2W _ I _ T _ 1WI enhanced and diffusion-weighted imaging (DWI) were observed. Results all the 5 cases of meningioma were infiltrated into the parenchyma of the brain to varying degrees along the meninges. 2 cases were located mainly in the right frontal meninges and 1 case was located mainly in the left frontal meninges and involved the anterior part of the falx meninges in 1 case. Mainly located in the meninges of the anterior part of the falx and involving bilateral frontal meninges, the T_1WI manifestations of 4 cases were low signal intensity and low signal intensity. Both T 2WI and DWI showed hypointensity T 1WI and low signal intensity T 1WI. Large flake edema was found in the white matter of the corresponding site of the lesion. Conclusion the MRI features of intracranial meningioma are as follows: the focus grows mainly along the meninges and invades the cerebral parenchyma on T _ 2WI and DWI, the enhancement of T _ 1WI is homogenous enhancement.
【作者单位】：广东省深圳市龙华区人民医院医学影像科;
【分类号】：R445.2;R529.3

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