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preoperative images from (A). sagittal T2-weighted magnetic resonance imaging (MRI) scan, (B). axial T2-weighted MRI revealed a spinal subdural hematoma at T12 (arrows) compressing the myelum from behind.
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T12 level, measuring 36 mm with spinal cord compression (Fig. 1). There was no tumor or underlying vascular malformation.
Intraoperative photograph showing the spinal subdural hematoma.
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T11-L1 laminectomy with evacuation of the subdural hematoma (Fig. 2). The operative findings did not reveal any arteriovenous or neoplastic malformation.