椎管内神经鞘瘤:MRI与病理对照  

Intraspinal Neurilemmoma:MRI Versus Pathologic Diagnosis

作　　者：田锦林[1] 杨保凯[2] 

机构地区：[1]中国人民解放军252中心医院放射科,河北保定071000 [2]中国人民解放军252中心医院病理科,河北保定071000

出　　处：《实用放射学杂志》2005年第11期1142-1145,共4页Journal of Practical Radiology

摘　　要：目的探讨椎管内神经鞘瘤的MR I表现以及与病理学之间的关系。方法回顾性分析经手术、病理证实的椎管内神经鞘瘤16例的MR I表现,并和手术病理结果进行比较。结果所有病例均位于髓外硬膜下,颈段6例,胸段5例,胸腰交界处3例,腰段2例。MR I T1W I呈长椭圆形边界清楚的混杂等、低信号肿块,内有点、片状更低信号区,T2W I肿块表现为混杂等、高信号,内有点、片状更高信号区。增强T1W I呈不均匀明显强化,内部点、片状更低信号区无明显强化。上述表现和病理对照,肿瘤由Anton iA区和Anton i B区相互交错组成,Anton i B区集中在囊变、出血区,增强无明显强化,Anton i A区由富细胞区及胶原组成,为增强明显强化区。结论椎管内神经鞘瘤的MR I表现与其病理改变有关,这些变化对正确诊断具有指导意义。Objective To study the correlation between MRI features and pathology of intraspinal neruilemmoma . Methods MRI features of intraspinal neurilemmomas proved by operation and pathology in 16 cases were analysed retrospectively and in comparison with the results of pathology . Results All the tumors were intradural - extramedullary in location ,including 6 in the cervical regions,5 in the upper thoracic regions , 3 in the thoracic - lumbar junction and 2 in the lumbar regions. On MRI, the tumors were marginate elliptical heterogeneous isointense or slightly low intense with punctate or patchy more low intensity areas on T1 WI and heterogeneous slightly high intense or isointense with punctate or patchy more high intensity areas on T2WI. Parts of the masses obviously enhanced with no enhancement of more low intensity areas on T1WI, All of above imaging manifestations were corresponding to pathology of intraspinal neurilemmomas. Interlace of Antoni A and Antoni B was attributed to heterogeneous intensity. Antoni B that was no obviously enhancement was concentrated in bleeding and cystic areas and Antoni A that was obviously enhancement was concentrated in cellular area and collagen. Conclusion The imaging manifestations of intraspinal neurilemmoma is due to its varied pathologic changes, and this has guiding significance to the correct diagnosis.

关 键 词：脊椎 神经鞘瘤 磁共振成像 

分 类 号：R730.264[医药卫生—肿瘤] R445.2[医药卫生—临床医学]