title: Surgical Management of Dural Arteriovenous Fistula After Craniotomy: Case Report and Review of Literature.
abstract: BACKGROUND
  Development of dural arteriovenous fistula (dAVF) with cortical venous drainage at the site of previous craniotomy is a rare manifestation of nontraumatic subarachnoid hemorrhage (SAH). The authors present a case of postcraniotomy dAVF formation and discuss plausible underlying mechanisms of fistula formation and treatment options as well as review the literature.
  
  
  METHODS
  A 62-year-old man, who had undergone craniotomy 2 decades previously, presented with SAH. Workup revealed a low-flow dAVF with leptomeningeal venous drainage at the posterior margin of the craniotomy. Surgical resection of fistula was undertaken that resulted in cure.
  
  
  CONCLUSIONS
  Spontaneous SAH in patients with a previous history of an intracranial procedure (e.g., craniotomy, ventriculostomy) should prompt detailed imaging evaluation. In the absence of vascular disease, meticulous review of the angiogram must be undertaken to rule out dAVF at the procedure site and it should be treated definitively.
authors: Department of Neurological Surgery, Henry Ford Hospital, Detroit, Michigan, USA. Electronic address: apabane1@hfhs.org.
authors: Aqueel H
authors: AH
authors: Pabaney
authors: Department of Neurological Surgery, Henry Ford Hospital, Detroit, Michigan, USA.
authors: Adam M
authors: AM
authors: Robin
authors: Department of Neurological Surgery, Henry Ford Hospital, Detroit, Michigan, USA.
authors: Azam
authors: A
authors: Basheer
authors: Department of Neurological Surgery, Henry Ford Hospital, Detroit, Michigan, USA.
authors: Ghaus
authors: G
authors: Malik
mesh_terms: D020785:Central Nervous System Vascular Malformations / Q000150:complications / Q000000981:diagnostic imaging / Q000601:surgery*; D003399:Craniotomy / Q000379:methods*; D057510:Endovascular Procedures / Q000379:methods*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D013345:Subarachnoid Hemorrhage / Q000209:etiology / Q000601:surgery; D015898:Tomography Scanners, X-Ray Computed
keywords: Dural arteriovenous fistula; Endovascular embolization; Microsurgery; Postcraniotomy; Radiosurgery; Subarachnoid hemorrhage