Spinal extradural meningeal cyst

Case report

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  • 1 Department of Neurosurgery and Neurology, Institute of Clinical Medicine, University of Tsukuba, Ibaraki, Japan
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✓ The case of a 30-year-old man with a spinal extradural meningeal cyst in the thoracolumbar region is reported. Operative findings revealed a dural defect that allowed communication between the extradural cyst cavity and the subarachnoid space. Application of the Valsalva maneuver made the cerebrospinal fluid flow into the cyst cavity; however, reverse flow did not occur. These findings indicate that a valvelike mechanism developed in the enlarging cyst. Surgical resection of the cyst wall and closure of the dural defect provided a favorable result.

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Contributor Notes

Address reprint requests to: Kazuya Uemura, M.D., Department of Neurosurgery, Institute of Clinical Medicine, University of Tsukuba, 1–1–1 Tennoudai, Tsukuba, Ibaraki 305, Japan.
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