磁共振成像对椎管内肿瘤与肿瘤样病变的诊断价值  

Diagnosis of MRI for intraspinal canal tumor and tumor-like lesion

作　　者：江勋源[1] 魏光师[1] 刘波[1] 

机构地区：[1]广州中医药大学第二临床医学院影像科,广东省广州市510120

出　　处：《中国脊柱脊髓杂志》2005年第8期460-463,共4页Chinese Journal of Spine and Spinal Cord

摘　　要：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 investigate the MRI appearances and its diagnostic value in intraspinal canal tumor and tumor-like lesion.Method：Preoperative MRI examination,including plain scan and contrast scan,were taken in 33 cases of intraspinal canal tumor and tumor-like lesion pathologically proved.Their MRI appearances were analysed with emphasis on signs of differential diagnostic value.Result：There were 3 cases of intramedullary tumor,20 cases of extramedullary subdural tumor, 10 cases of other lesions.The site and MRI intensity of spinal meninginma and neurinomas were somewhat specific.Spinal meningioma usually occurs at the lower cervical and upper thoracic spine;while neurinomas preferably at upper cervical and lower thoracic spine.Spinal meningioma usually showed homogenous MRI intensity,while neurinomas were not.Among them, cystic intensity was predominantly in Schwannoma.Conclusion：MRI examination of spinal tumor is accurate diagnosis between intramedullary, and extramedullry origin.Upon this differentiation,the site,homogeneity of MRI intensity,especially an enhanced scan may well contribute to a preoperative pathological probability.

关 键 词：脊柱肿瘤 磁共振成像 诊断 

分 类 号：R739.4[医药卫生—肿瘤]