摘要
目的 :探讨MRI对椎管内神经鞘瘤的诊断及鉴别诊断价值。方法 :回顾性分析经手术、病理证实的 16例椎管内神经鞘瘤的MR表现 ,评价MRI增强扫描在椎管内神经鞘瘤的诊断及鉴别诊断中的作用。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 ,MRI平扫T1WI呈长椭圆形边界清楚的等、低混杂信号 ,T2 WI表现为等、高混杂信号 ,增强呈不均匀明显强化。增强后肿瘤与邻近脊髓及硬膜囊的关系更加清楚。结论 :MRI对椎管内神经鞘瘤的术前定位、定性诊断、有较大的价值 ,对指导制定手术方案具有重要作用。
Objective:To study the diagnostic and differentiating value of MRI enhancement in intra-spinal neurilemoma.Methods:Sixteen patients of intra-spinal neurilemomas which were proved by operation and pathology were investigated. The manifestations of MRI enhancement were analyzed and the role of MRI enhancement in diagnosis and differentiation of intra-spinal neurilemoma was evaluated.Results:All the tumors were intradural-extramedullary in location. 6 of 16 intra-spinal neurilemmomas occurred in the cervical regions, 5 of 16 occurred in the upper thoracic regions, 3 of 16 occurred in the thoracic-lumbar junction, 2 of 16 occurred in the lumbar regions. On MRI, the tumors were marginate elliptical heterogeneous isointensity or slightly low intensity on T 1 and heterogeneous slightly high intensity or isointensity on T 2 with obviously heterogeneous enhancement. After enhancement, the margin of the tumor,spinal cord and dural sac were became clearer.Conclusion:MRI enhancement has guiding significance to the locational and qualitative diagnosis, display of the boundary between the tumor and adjacent spinal cord, and instituting operational scheme of intra-spinal neurilemoma before operation.
出处
《医学影像学杂志》
2004年第5期354-356,共3页
Journal of Medical Imaging
关键词
神经鞘瘤
椎管内
磁共振成像
Neurilemoma
Intra-spinal cannal
Magnetic resonance imaing
