title: Posterior epidural migration of lumbar disc fragments: report of three cases.
abstract: METHODS
  Report of three cases.
  
  
  OBJECTIVE
  To describe a rare location of intervertebral disc migration.
  
  
  BACKGROUND
  Migration of sequestered disc fragments to the posterior extradural space is rare, and posterior migration of the free fragments causing cauda equina syndrome is exceptionally rare.
  
  
  METHODS
  Three patients with posteriorly migrated epidural disc fragments were evaluated with radiograph, computed tomography, and magnetic resonance imaging and underwent surgery.
  
  
  RESULTS
  All of the patients responded well to operative therapy with complete relief of symptoms.
  
  
  CONCLUSIONS
  Early surgery should be the first choice of therapy in patients with large posteriorly migrated sequestered disc fragments, to prevent severe neurologic deficits such as cauda equina and conus medullaris syndromes.
authors.affiliation: Karadeniz Technical University, Faculty of Medicine, Department of Neurosurgery, Trabzon, Turkey.
authors.forename: Kayhan
authors.initials: K
authors.lastname: Kuzeyli
authors.forename: Ertuğrul
authors.initials: E
authors.lastname: Cakir
authors.forename: Haydar
authors.initials: H
authors.lastname: Usul
authors.forename: Süleyman
authors.initials: S
authors.lastname: Baykal
authors.forename: Uğur
authors.initials: U
authors.lastname: Yazar
authors.forename: Gökalp
authors.initials: G
authors.lastname: Karaarslan
authors.forename: Erhan
authors.initials: E
authors.lastname: Arslan
authors.forename: Bekircan
authors.initials: B
authors.lastname: Peksoylu
mesh_terms: D017586:Diskectomy; D004824:Epidural Space / Q000601:surgery; D005260:Female; D006801:Humans; D007403:Intervertebral Disc / Q000601:surgery*; D007405:Intervertebral Disc Displacement / Q000175:diagnosis / Q000601:surgery*; D008161:Lumbosacral Region; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D011128:Polyradiculopathy / Q000209:etiology*; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome