title: The extraforaminal juxtafacet cyst as a rare cause of L5 radiculopathy: a case report.
abstract: METHODS
  This is a report of a case.
  
  
  OBJECTIVE
  To document the clinical, radiographic, and histologic characteristics of a lumbar extraforaminal juxtafacet cyst.
  
  
  BACKGROUND
  Spinal juxtafacet cysts develop most frequently at the dorsal aspect of the zygapophysial joint, sometimes in the posterolateral area of the canal. In one case, they have been described in the foraminal and extraforaminal region.
  
  
  METHODS
  Description of the case report.
  
  
  RESULTS
  The authors report one case of a strictly extraforaminal juxtafacet cyst responsible for L5 sciatica.
  
  
  CONCLUSIONS
  Juxtafacet cysts of the spine represent an infrequent cause of sciatica, usually when they grow in the canal, or more exceptionally when they occupy the foraminal or extraforaminal areas.
authors.affiliation: Department of Neurosurgery, State University of Liège, Liège, Belgium.
authors.forename: Bernard L
authors.initials: BL
authors.lastname: Salmon
authors.forename: Manuel P
authors.initials: MP
authors.lastname: Deprez
authors.forename: Achille E
authors.initials: AE
authors.lastname: Stevenaert
authors.forename: Didier H
authors.initials: DH
authors.lastname: Martin
mesh_terms: D001845:Bone Cysts / Q000150:complications / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D008159:Lumbar Vertebrae; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D011843:Radiculopathy / Q000209:etiology*; D012585:Sciatica / Q000209:etiology; D021801:Zygapophyseal Joint