title: Spinal aneurysm arising from the feeding pedicle of a thoracic perimedullary arteriovenous fistula: case report.
abstract: BACKGROUND
  Aneurysms of the spinal artery are exceedingly rare. We report on the first case of a pathologically proven aneurysm arising from the feeding pedicle of a perimedullary arteriovenous fistula (AVF).
  
  
  METHODS
  A 42-year-old man presented with subarachnoid hemorrhage (SAH) and spinal angiography demonstrated a thoracic perimedullary AVF fed by the left T8 intercostal artery that also harbored a spinal aneurysm. He underwent laminectomy 18 days postonset. The aneurysm was resected and the fistula was interrupted.
  
  
  CONCLUSIONS
  For appropriate treatment planning, it is necessary to rule out the presence of aneurysms on the feeding vessel in patients with spinal perimedullary AVF who present with SAH.
authors.affiliation: Division of Neurosurgery, Kumamoto Rosai Hospital, Kumamoto 860-856, Japan.
authors.forename: Yuki
authors.initials: Y
authors.lastname: Ohmori
authors.forename: Jun-Ichiro
authors.initials: J
authors.lastname: Hamada
authors.forename: Motohiro
authors.initials: M
authors.lastname: Morioka
authors.forename: Akimasa
authors.initials: A
authors.lastname: Yoshida
mesh_terms: D000328:Adult; D000783:Aneurysm / Q000209:etiology / Q000601:surgery*; D000792:Angiography; D001164:Arteriovenous Fistula / Q000150:complications*; D006801:Humans; D007796:Laminectomy; D008297:Male; D013116:Spinal Cord / Q000098:blood supply*; D013345:Subarachnoid Hemorrhage / Q000209:etiology