title: Spinal extradural meningeal cyst. Case report.
abstract: 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.
authors: Department of Neurosurgery, Institute of Clinical Medicine, University of Tsukuba, Ibaraki, Japan.
authors: K
authors: K
authors: Uemura
authors: T
authors: T
authors: Yoshizawa
authors: A
authors: A
authors: Matsumura
authors: H
authors: H
authors: Asakawa
authors: K
authors: K
authors: Nakamagoe
authors: T
authors: T
authors: Nose
mesh_terms: D000328:Adult; D003560:Cysts / Q000175:diagnosis / Q000473:pathology / Q000601:surgery; D006801:Humans; D008159:Lumbar Vertebrae; D008279:Magnetic Resonance Imaging; D008297:Male; D008578:Meninges / Q000000981:diagnostic imaging / Q000473:pathology; D013122:Spinal Diseases / Q000175:diagnosis / Q000473:pathology / Q000601:surgery; D013904:Thoracic Vertebrae; D014057:Tomography, X-Ray Computed