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A, T2WI MR image demonstrates a focal dorsal indentation in the upper thoracic spinal cord (arrow). A, T2WI MR image demonstrates a focal dorsal indentation.

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Presentation on theme: "A, T2WI MR image demonstrates a focal dorsal indentation in the upper thoracic spinal cord (arrow). A, T2WI MR image demonstrates a focal dorsal indentation."— Presentation transcript:

1 A, T2WI MR image demonstrates a focal dorsal indentation in the upper thoracic spinal cord (arrow).
A, T2WI MR image demonstrates a focal dorsal indentation in the upper thoracic spinal cord (arrow). Note prominent epidural fat (asterisk). B, T2WI MR image status post–posterior laminectomy and lysis of a dorsal arachnoid web demonstrates resolution of the dorsal indentation, improved cord signal, and resolution of the syringomyelia. C, Intraoperative image demonstrates the dorsal arachnoid web (between the white arrowheads) before lysis of the web. M.A. Reardon et al. AJNR Am J Neuroradiol 2013;34: ©2013 by American Society of Neuroradiology

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