title: Bilateral cerebellopontine angle arachnoid cysts: case report.
abstract: OBJECTIVE
  A rare case of bilateral cerebellopontine angle (CPA) arachnoid cysts (ACs), accompanied by cerebellar tonsillar displacement toward the foramen magnum, is presented.
  
  
  METHODS
  A 45-year-old woman presented with progressive dysphagia, vertigo, and truncal ataxia. Magnetic resonance imaging revealed bilateral CPA ACs and cerebellar tonsillar displacement.
  
  
  METHODS
  The right CPA AC was excised via a suboccipital approach. Decompression of the foramen magnum and duraplasty were also performed.
  
  
  CONCLUSIONS
  The case reported here is the first case of bilateral CPA ACs. Decompression of the foramen magnum and excision of the cyst resulted in complete relief of symptoms.
authors.affiliation: Department of Neurosurgery, University of Akdeniz School of Medicine, Antalya, Turkey. tucar@superonline.com
authors.forename: T
authors.initials: T
authors.lastname: Ucar
authors.forename: M
authors.initials: M
authors.lastname: Akyuz
authors.forename: S
authors.initials: S
authors.lastname: Kazan
authors.forename: R
authors.initials: R
authors.lastname: Tuncer
mesh_terms: D016080:Arachnoid Cysts / Q000175:diagnosis* / Q000601:surgery; D002530:Cerebellopontine Angle; D019299:Decompression, Surgical; D004388:Dura Mater / Q000601:surgery; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D019635:Neurosurgical Procedures