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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 explore the relationship between MR I appearance and pathology in schwannoma of the spinal canal. Methods The MRI findings of 16 cases of neurilemmoma of the spinal canal confirmed by operation and pathology were retrospectively analyzed and compared with the results of surgical pathology. Results All cases were located extramedullary subdural, 6 cases of cervical segment, 5 cases of thoracic spine, 3 cases of thoracolumbar junction and 2 cases of lumbar spine. MR I T1W I was a long oval-shaped border clearly mixed, low signal mass, a little, flaky lower signal area, T2W I mass showed mixed, high signal, a little, flaky higher signal area. Increased T1WI was uneven significantly enhanced, internal points, flaky lower signal area no significant enhancement. The above performance and pathological control, the tumor by the intersection of AntoniA and AntoniB area, Antoni B area concentrated in the cystic area, hemorrhage, enhanced no significant enhancement, Antoni A area by the rich cell area and collagen, as Enhance significantly strengthen the area. Conclusion MR I manifestations of spinal nerve sheath tumors and its pathological changes, these changes for the correct diagnosis is instructive.