title: An arteriovenous malformation within the internal acoustic meatus and cerebellopontine angle cistern.
abstract: OBJECTIVE
  We report a case of an arteriovenous malformation within the internal auditory meatus and cerebellopontine angle, and we discuss its imaging appearances and management.
  
  
  METHODS
  A 50-year-old man presented with a two-year history of vertigo. Magnetic resonance imaging and magnetic resonance angiography demonstrated a lesion consisting of multiple 'high flow' vessels within the left internal auditory meatus and cerebellopontine angle. Transarterial embolisation was performed, with obliteration of the arteriovenous malformation.
  
  
  CONCLUSIONS
  Arteriovenous malformations of the internal auditory meatus and cerebellopontine angle are exceedingly rare. It is important that a pre-treatment diagnosis is made, as the management of arteriovenous malformation differs from that of other, more common lesions at this site.
authors.affiliation: Neuroradiology Department, King's College Hospital, London, UK. preenapatel@doctors.org.uk
authors.forename: P N
authors.initials: PN
authors.lastname: Patel
authors.forename: S
authors.initials: S
authors.lastname: Connor
authors.forename: S
authors.initials: S
authors.lastname: Brew
authors.forename: M J
authors.initials: MJ
authors.lastname: Gleeson
mesh_terms: D001158:Arteries / Q000002:abnormalities*; D002530:Cerebellopontine Angle / Q000098:blood supply*; D002531:Cerebellum / Q000098:blood supply*; D002533:Cerebral Angiography; D007758:Ear, Inner / Q000002:abnormalities / Q000098:blood supply*; D004621:Embolization, Therapeutic / Q000009:adverse effects; D006319:Hearing Loss, Sensorineural / Q000209:etiology; D006801:Humans; D002538:Intracranial Arteriovenous Malformations / Q000175:diagnosis* / Q000628:therapy; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D014012:Tinnitus / Q000209:etiology; D016896:Treatment Outcome; D014717:Vertigo / Q000209:etiology