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A 21-year-old man with recurrent left S1 sciatica and radiculopathy by electromyography. A 21-year-old man with recurrent left S1 sciatica and radiculopathy.

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Presentation on theme: "A 21-year-old man with recurrent left S1 sciatica and radiculopathy by electromyography. A 21-year-old man with recurrent left S1 sciatica and radiculopathy."— Presentation transcript:

1 A 21-year-old man with recurrent left S1 sciatica and radiculopathy by electromyography.
A 21-year-old man with recurrent left S1 sciatica and radiculopathy by electromyography. A, Precontrast axial T1-weighted MR image reveals an intermediate signal intensity lesion in the left epidural space including an ill-defined margin of the left S1 nerve root (arrows). B, Postcontrast axial T1-weighted image shows enhancement of left epidural mass, suggesting postoperative fibrosis (arrows) and focal enhancement of the thickened left epidural S1 nerve root (arrowhead). Y.S. Lee et al. AJNR Am J Neuroradiol 2009;30: ©2009 by American Society of Neuroradiology

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