title: Progressive spontaneous herniation of the thoracic spinal cord: case report.
abstract: OBJECTIVE
  We report one case of spontaneous thoracic spinal cord herniation. To our knowledge, this is the first case involving radiological documentation of the development of herniation. Clinical features and surgical techniques are also presented.
  
  
  METHODS
  We describe the case of a 51-year-old female patient who experienced progressive Brown-Sequard syndrome for 2 years. Three magnetic resonance imaging examinations were performed; they revealed the progressive development of anterolateral spinal cord herniation at the level of T6 during those 2 years.
  
  
  METHODS
  After laminectomy at T6, the herniated myelon was microsurgically removed and the neurological symptoms improved.
  
  
  CONCLUSIONS
  We present the possible causes, the proposed pathophysiological mechanisms, and the clinical and radiological development of this rare entity, with a review of the literature published to date. We propose that a preexisting weakness of the ventral dural fibers, combined with abnormal adhesion of the spinal cord to the anterior dural sleeve, leads to progressive herniation throughout life. Microsurgical treatment may halt the exacerbation of the neurological symptoms.
authors.affiliation: Neurochirurgische Klinik, Klinikum Duisburg, Germany.
authors.forename: C
authors.initials: C
authors.lastname: Ewald
authors.forename: D
authors.initials: D
authors.lastname: Kühne
authors.forename: W E
authors.initials: WE
authors.lastname: Hassler
mesh_terms: D018437:Brown-Sequard Syndrome / Q000175:diagnosis / Q000601:surgery; D005260:Female; D006547:Hernia / Q000175:diagnosis; D059685:Herniorrhaphy; D006801:Humans; D007796:Laminectomy; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D013118:Spinal Cord Diseases / Q000175:diagnosis / Q000601:surgery*; D013904:Thoracic Vertebrae / Q000601:surgery