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目的:分析椎管内肿瘤的MRI表现特征,探讨MRI对椎管内肿瘤与肿瘤样病变的诊断价值。方法:33例经手术和病理证实的椎管内肿瘤与肿瘤样病变患者,术前均行MRI平扫与增强扫描,分析其MRI影像特征。结果:髓内肿瘤3例;髓外硬膜下肿瘤20例;其它椎管内病变10例。髓外硬膜下肿瘤中脊膜瘤与神经类肿瘤的发生部位与信号有一定的特异性。脊膜瘤好发于上胸及下颈段,神经类肿瘤则以上颈及下胸段居多。脊膜瘤信号多均匀,而神经类肿瘤多不均匀,易发生囊变是较为特征性的表现,有囊变病灶中又以神经鞘瘤居多。结论:MRI检查可以对椎管内肿瘤进行明确的髓内与髓外定位诊断,在此定位诊断的基础上,结合肿瘤的好发部位、信号是否均匀、增强扫描上所见有助于其术前定性诊断。
OBJECTIVE: To analyze the MRI features of intraspinal tumors and to evaluate the diagnostic value of MRI for tumor and tumor-like lesions in the spinal canal. Methods: Thirty-three patients with intraspinal and tumor-like lesions confirmed by surgery and pathology were examined with MRI and enhanced MRI before operation, and their MRI features were analyzed. Results: There were 3 intramedullary tumors, 20 extramedullary subdural tumors and 10 other intraspinal lesions. Extramedullary subdural tumors in meningioma and neurogenesis of the tumor site and the signal has a certain specificity. Meningioma occur in the upper and lower cervical cancer, neurogenic tumors are mostly in the upper neck and lower thoracic. Spinal meningioma signal more uniform, and more uneven neurological tumors, prone to cystic change is more characteristic of the performance, there are cystic lesions in the majority of schwannoma. Conclusion: MRI examination can determine the intramedullary and extramedullary location of the tumor in the spinal canal. On the basis of this location diagnosis, it is helpful to combine with the site of the tumor, whether the signal is uniform or not, and to enhance the scan Pre-diagnosis.