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- W2353457799 abstract "Objective To investigate MRI findings of myxopapillary ependymomas( MPE) in spinal canal and to compare these findings with pathologic results. Methods MR findings in 12 patients with surgically-confirmed MPE in spinal canal were retrospectively analyzed. MRI signs included tumor location,shape,size,signal intensity and internal enhancement. The results were analyzed. Results The lesion of MPE was single in all the 12 patients. The lesions were located at the conus medullaris region( n = 1) or at the filum terminale area( n = 11). 75% of lesions( 9 /12) were situated around L2 level. Plain MRI scanning demonstrated that the lesions showed iso-signal on T1WI and patch high-signal within the tumor could be seen in 9 patients,while on T2WI high-signal was seen in 11 patients and iso-signal in one patient,and heterogeneous signal intensity with flagpole-like or patch low-signal could be detected in 10 lesions. Contrast-enhanced MRI scanning revealed that all the lesions had heterogeneous enhancement,and these areas that were characterized by high-signal on T1WI or low-signal on T2WI showed no enhancement at all. Pathologically,the tumor was rich in blood supply and easily bled. The tumor cells arranged around vascular myxoid stromal cores in a papillary radial pattern,and abundant myxoid was collected in the vessels or around the vascular cells. Conclusion The characteristic MRI manifestations of myxopapillary ependymomas in spinal canal are iso-signal mixed with high-signal within the tumor on T1WI and heterogeneous enhancement on enhanced scans. These MRI manifestations are strongly consistent with the pathologic findings." @default.
- W2353457799 created "2016-06-24" @default.
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- W2353457799 date "2014-01-01" @default.
- W2353457799 modified "2023-10-05" @default.
- W2353457799 title "MR Imaging Manifestations of Myxopapillary Ependymoma in Spinal Canal: Comparison with Pathologic Findings" @default.
- W2353457799 hasPublicationYear "2014" @default.
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