Sequestrated lumbar disc fragment
Low back pain and left leg paresthesias.
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Sagittal T2-weighted MR image of the lumbar spine at the midline plane reveals a mass lesion with hyperintensity relative to the intervertebral disk at the posterior epidural space at the L3 level, compressing the dura. In sagittal T1-weighted the mass is not evident because is isointense to CSF. On sagittal and axial T1 +Gad, the mass shows low signal intensity with peripheral contrast enhancement.
- C.Y. Chen.et al. Posterior Epidural Migration of a Sequestrated Lumbar Disk Fragment: MR Imaging Findings. AJNR August 2006 27: 1592-1594