title: Circumferential intradural meningioma of the thoracic spinal cord.
abstract: There are very few reported cases of a meningioma circumferentially surrounding the spinal cord. To date, this entity has only been described at the conus medullaris and in the cervical cord. Herewith, the authors describe a case of an intradural extramedullary meningioma that completely encircled the thoracic spinal cord.
  
  
  
  A 40-year-old woman with progressive numbness of the lower limbs and spasticity of gait following a fall presented to our hospital. Magnetic resonance imaging of the spine demonstrated an abnormality at T6-T7 completely encircling the spinal cord. The patient underwent a T6-T8 laminectomy and subtotal resection of the intradural partially calcified lesion. Resection of the anterolateral portion was not feasible. Histology revealed psammomatous meningioma (WHO Grade 1). The patient recovered well and was discharged with improved gait but some residual numbness of her feet and right hemithorax.
  
  
  
  This is the first reported case of an intradural extramedullary meningioma completely encircling the thoracic spinal cord. Achieving complete resection of this circumferential meningioma was not possible via a posterior approach. The optimum management of this condition is unknown; clearly, achieving symptomatic relief with adequate cord decompression is paramount; however, the long-term outcome and risk of recurrence in these cases, given their rarity and the difficulties in achieving complete resection, is unknown.
authors.affiliation: Department of Neurosurgery, Salford Royal Hospital, Stott Lane, Greater Manchester, England M6 8HD, United Kingdom. Electronic address: mitchell.foster@doctors.org.uk.
authors.forename: Mitchell
authors.initials: M
authors.lastname: Foster
authors.affiliation: Department of Neuroradiology, Salford Royal Hospital, Stott Lane, Greater Manchester, England M6 8HD, United Kingdom.
authors.forename: Calvin
authors.initials: C
authors.lastname: Soh
authors.affiliation: Department of Neuropathology, Salford Royal Hospital, Stott Lane, Greater Manchester, England M6 8HD, United Kingdom.
authors.forename: Daniel
authors.initials: D
authors.lastname: DuPlessis
authors.affiliation: Department of Neurosurgery, Salford Royal Hospital, Stott Lane, Greater Manchester, England M6 8HD, United Kingdom.
authors.forename: Konstantina
authors.initials: K
authors.lastname: Karabatsou
mesh_terms: D000328:Adult; D019299:Decompression, Surgical; D005260:Female; D006801:Humans; D007796:Laminectomy; D008279:Magnetic Resonance Imaging; D008577:Meningeal Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D008579:Meningioma / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D013904:Thoracic Vertebrae / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*