Head and Neck Imaging
Diagnosis and Differential Diagnosis of Subdural Extramedullary Tumors in the Spinal by MRI
Author：HU Xiao-yan, WANG Yue, WU Ying-hua, et al.
affiliation： Chengdu University of TCM, Chengdu 610075, Sichuan Province, China
PDFAbstract
Objective To evaluate the signs of primary subdural extramedullary tumors so as to improve the level of diagnosis and differential diagnosis. Methods We retrospectively reviewed the clinical data and MR images of 20 consecutive patients with surgically and pathologically proven subdural extramedullary tumors including 10 cases of neurinoma, 3 cases of neurofibroma and 7 cases of meningioma. Results There were significant difference between the MR signs of spinal neurogenic tumors and meningioma in the locations of the tumors, the angle to spinal dure mater, dural tail sign, cystic or necrosis in tumor and the features of enhancement scanning(P<0.05). However, there were no significant difference between the MR intensity of neurogenic tumors and that of meningioma in T1WI, the MR intensity of Schwannoma was heterogeneous in T2WI, and that of meningioma was even or slightly hyperintense signal in T2WI. Conclusion The neurogenic tumors and meningioma have characteristic MRI findings, and the MRI is an important method for clinical diagnosis and differential diagnosis of neurogenic tumors and meningioma.
【Keyword】Subdural Extramedullary Tumors; Spinal Canal; Magnetic Resonance Imaging
【Chart number】R739.42；R445.2
【Document Identification Number】A
【DOI】 10.3969/j.issn.1672- 5131.2017.11.038
Chinese journal of CT and MRI
th15Volume， th 11 Issue
2017Year11Month
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