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Intradural extramedullary tumor: preoperative T1 weighted Gadolinium enhanced sagittal (a) and axial (b) MRI scans of an extramedullary meningioma. Sagittal (a) and axial (b) B-mode scans of a meningioma which appears roundly shaped, homogeneous, capsulated. The spinal cord is progressively pushed anteriorly and laterally, with distortion of the arachnoidal structure, not recognizable in the presence of the lesion
