title: [Spontaneous posterior sphenoid sinus fistula].
abstract: OBJECTIVE
  Describe a rare localization of spontaneous cerebrospinal fistula.
  
  
  METHODS
  A 75-year-old women was admitted for bacterial meningitis arising from a sinus infection. She had not experienced facial or head trauma. The CT-scan revealed pneumocephaly and a defect in the posterior part of the sphenoid sinus.
  
  
  CONCLUSIONS
  Spontaneous cerebrospinal fistula is uncommon. The exact etiology remains unknown.
authors.affiliation: Service de Radiologie, Centre Hospitalier Henri Duffaut, Avignon. Fcrozier@ch-avignon.fr
authors.forename: F
authors.initials: F
authors.lastname: Crozier
authors.forename: J-L
authors.initials: JL
authors.lastname: Goubert
authors.forename: P
authors.initials: P
authors.lastname: Gobert
authors.forename: D
authors.initials: D
authors.lastname: Bohé
authors.forename: N
authors.initials: N
authors.lastname: Martin
authors.forename: G
authors.initials: G
authors.lastname: Roumieu
authors.forename: I
authors.initials: I
authors.lastname: Arwidson
mesh_terms: D000368:Aged; D005260:Female; D005402:Fistula / Q000000981:diagnostic imaging* / Q000601:surgery; D006801:Humans; D010254:Paranasal Sinus Diseases / Q000000981:diagnostic imaging* / Q000601:surgery; D013101:Sphenoid Sinus / Q000000981:diagnostic imaging* / Q000601:surgery; D014057:Tomography, X-Ray Computed