title: Vertebral artery aneurysm causing contralateral cerebellopontine angle mass effect.
abstract: OBJECTIVE
  A vertebral artery aneurysm mimicking a contralateral cerebellopontine angle tumor is described. This is only the second reported case of this in the literature.
  
  
  METHODS
  Case report.
  
  
  METHODS
  Radcliffe Infirmary, Oxford, United Kingdom.
  
  
  METHODS
  Seventy-year-old female patient who presented with a gradually deteriorating right-sided sensorineural hearing loss and a right facial palsy.
  
  
  METHODS
  Magnetic resonance imaging scan and computed tomography angiography with three-dimensional reconstruction followed-up by endovascular coiling of a vertebral artery aneurysm.
  
  
  METHODS
  Deterioration in neurologic status.
  
  
  RESULTS
  Satisfactory recovery, and at 3 months, the patient is well with no deterioration in facial nerve function.
  
  
  CONCLUSIONS
  Imaging by means of computed tomography angiography complements the standard magnetic resonance imaging scan in the rare event of an aneurysm at the cerebellopontine angle. Endovascular coiling occlusion is a recognized and effective way of managing intracranial aneurysms at the cerebellopontine angle.
authors.affiliation: Department of Otolaryngology, Radcliffe Infirmary, Oxford, UK. pmonksfield@talk21.com
authors.forename: Peter
authors.initials: P
authors.lastname: Monksfield
authors.forename: Pablo
authors.initials: P
authors.lastname: Martinez Devesa
authors.forename: Andrew
authors.initials: A
authors.lastname: Molyneux
authors.forename: Chris
authors.initials: C
authors.lastname: Milford
mesh_terms: D000368:Aged; D002528:Cerebellar Neoplasms / Q000175:diagnosis*; D002530:Cerebellopontine Angle; D002533:Cerebral Angiography; D003937:Diagnosis, Differential; D004621:Embolization, Therapeutic / Q000295:instrumentation / Q000379:methods; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted; D002532:Intracranial Aneurysm / Q000175:diagnosis* / Q000628:therapy; D008279:Magnetic Resonance Imaging; D014057:Tomography, X-Ray Computed; D014711:Vertebral Artery