title: Arteriovenous malformation of the scalp with cerebral steal.
abstract: BACKGROUND
  Arteriovenous malformation of the scalp resulting from blunt trauma to the head is an unusual occurrence and is rarely associated with neurological sequelae. This case details an arteriovenous malformation with a cerebral steal phenomenon.
  
  
  METHODS
  A 21-year-old man presented with an enlarging, pulsatile mass in the right facial/temporal area without known cause. CT and angiography were consistent with a large arteriovenous malformation involving the external carotid system, causing a secondary cerebral steal that resulted in neurological symptoms including seizure. Surgical resection of the mass was undertaken.
  
  
  RESULTS
  The patient had an uncomplicated preoperative course with complete resolution of all neurologic symptoms.
  
  
  CONCLUSIONS
  Cerebral steal is an uncommon consequence of traumatic extracranial arteriovenous malformation. The current literature is reviewed, and the diagnostic approach as well as therapeutic options are discussed.
authors.affiliation: Division of Otolaryngology-Head and Neck Surgery, Department of Surgery, QEII Hospital, Halifax, Nova Scotia, Canada.
authors.forename: Kate
authors.initials: K
authors.lastname: Kelly
authors.forename: Jonathan R B
authors.initials: JR
authors.lastname: Trites
authors.forename: S Mark
authors.initials: SM
authors.lastname: Taylor
authors.forename: Martin
authors.initials: M
authors.lastname: Bullock
authors.forename: Robert D
authors.initials: RD
authors.lastname: Hart
mesh_terms: D001165:Arteriovenous Malformations / Q000175:diagnosis* / Q000209:etiology / Q000601:surgery; D006801:Humans; D008297:Male; D010306:Parotid Gland / Q000098:blood supply*; D012535:Scalp / Q000293:injuries*; D013349:Subclavian Steal Syndrome / Q000175:diagnosis / Q000209:etiology* / Q000601:surgery; D014949:Wounds, Nonpenetrating / Q000150:complications* / Q000473:pathology / Q000628:therapy; D055815:Young Adult