title: Serious myelopathy due to magnetic resonance imaging-occult arteriovenous fistula: Case report of petrous ridge dural arteriovenous fistula.
abstract: OBJECTIVE
  We present a case of magnetic resonance imaging (MRI)-occult intracranial dural arteriovenous fistula (DAVF) with serious cervical myelopathy and review the pathophysiological background.
  
  
  METHODS
  A 61-year-old man had suffered from progressive neurological deterioration. He had demonstrated swollen spinal cord with diffuse enhancement and no dilated vascularity on MRI. Finally, digital subtraction angiography revealed DAVF at the petrous ridge and it was successfully treated by embolization.
  
  
  CONCLUSIONS
  A slow flow DAVF is not readily recognizable on MRI. Whenever a patient presents with unexplainable progressive myelopathy, a possibility of vascular origin has to be considered.
authors.affiliation: Department of Radiology, The Catholic University of Korea, Korea.
authors.forename: Hyun Jeong
authors.initials: HJ
authors.lastname: Kim
authors.affiliation: Department of Interventional Neuroradiology, Lahey Clinic Medical Center, USA In.Sup.Choi@lahey.org.
authors.forename: In Sup
authors.initials: IS
authors.lastname: Choi
mesh_terms: D015901:Angiography, Digital Subtraction; D020785:Central Nervous System Vascular Malformations / Q000150:complications* / Q000000981:diagnostic imaging* / Q000628:therapy; D002533:Cerebral Angiography; D003937:Diagnosis, Differential; D004621:Embolization, Therapeutic; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D013118:Spinal Cord Diseases / Q000000981:diagnostic imaging* / Q000209:etiology* / Q000628:therapy
keywords: Dural arteriovenous fistula; angiography; magnetic resonance imaging; myelopathy; spinal cord disease; therapeutic embolization