title: Brain stem ischemia from intracranial dural arteriovenous fistula: case report.
abstract: BACKGROUND
  Intracranial dural arteriovenous fistulas (AVFs) with spinal perimedullary venous drainage are rarely reported, but most of the patients initially have presented with myelopathy or subarachnoid hemorrhage. This is the first report of the intracranial dural AVF patient who presented with brain stem infarction.
  
  
  METHODS
  A 38-year-old woman experienced nausea and vomiting with an acute onset, followed by vertigo. Magnetic resonance imaging showed ischemic lesion in the medulla oblongata, and she was then sent to our hospital. On admission, she had nystagmus, swallowing difficulties, Homer syndrome, and right hemiparesis and hemisensory disturbance. Cerebral angiography revealed dural AVF draining into spinal perimedullary veins at the left transverse-sigmoid sinus. The patient was treated by transvenous embolization under local anesthesia. A microcatheter proceeded to the left sigmoid sinus via the internal jugular vein, and embolization of the sinus was performed using coils without complications. The patient's swallowing difficulties improved over a few days after the embolization, and one month later, there remained only a slight mild hemiparesis and hemisensory disturbance. Six months after the onset, there was no ischemic lesion in the brain stem on magnetic resonance imaging.
  
  
  CONCLUSIONS
  In this case, we showed the possibility of brain stem infarction, caused by the intracranial dural AVF.
authors.affiliation: Departmrnt of Neurological Surgery, Kure Kyosai Hospital, Kure, Hiroshima 737-8505, Japan. motoyoshisato@hotmail.com
authors.forename: Motoyoshi
authors.initials: M
authors.lastname: Satoh
authors.forename: Mitsuo
authors.initials: M
authors.lastname: Kuriyama
authors.forename: Takashi
authors.initials: T
authors.lastname: Fujiwara
authors.forename: Koji
authors.initials: K
authors.lastname: Tokunaga
authors.forename: Kenji
authors.initials: K
authors.lastname: Sugiu
mesh_terms: D000328:Adult; D002545:Brain Ischemia / Q000209:etiology / Q000503:physiopathology / Q000601:surgery*; D020526:Brain Stem Infarctions / Q000209:etiology / Q000503:physiopathology / Q000601:surgery*; D002533:Cerebral Angiography; D003392:Cranial Sinuses / Q000473:pathology* / Q000503:physiopathology / Q000601:surgery*; D004621:Embolization, Therapeutic / Q000379:methods; D005260:Female; D006801:Humans; D002538:Intracranial Arteriovenous Malformations / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery*; D014854:Lateral Medullary Syndrome / Q000209:etiology / Q000503:physiopathology / Q000601:surgery; D008279:Magnetic Resonance Imaging; D008526:Medulla Oblongata / Q000098:blood supply / Q000473:pathology / Q000503:physiopathology; D019635:Neurosurgical Procedures / Q000379:methods; D019736:Prostheses and Implants; D013116:Spinal Cord / Q000098:blood supply; D016896:Treatment Outcome; D014656:Vascular Surgical Procedures / Q000379:methods