Brainstem Venous Congestion Caused by Perimedullary Drainage in Anterior Cranial Fossa Dural Arteriovenous Fistula

World Neurosurg. 2019 Jul;127:503-508. doi: 10.1016/j.wneu.2019.04.204. Epub 2019 Apr 30.

Abstract

Background: Myelopathy develops relatively rarely in intracranial dural arteriovenous fistula (DAVF); it has only been reported in posterior cranial fossa DAVF. Herein, we report the first, to our knowledge, case of anterior cranial fossa (ACF) DAVF with myelopathy.

Case description: A 75-year-old man presented with dizziness, nausea, and gait disturbance. T2-weighted magnetic resonance imaging revealed a hyperintense area in the left cerebellum and medulla; a flow void was also detected around the medulla. The patient was first diagnosed with spinal DAVF, but the shunt point was detected at the anterior ethmoidal artery, flowing from the olfactory vein to the basal vein of Rosenthal and anterior/posterior spinal veins. The shunt point was clipped during craniotomy, and neurologic symptoms improved.

Conclusions: Myelopathy because of intracranial DAVF potentially involves diagnostic pitfalls. Even in ACF DAVF, there is a possibility of myelopathy caused by perimedullary venous drainage.

Keywords: Anterior cranial fossa; Dural arteriovenous fistula; Myelopathy; Perimedullary vein.

Publication types

  • Case Reports

MeSH terms

  • Aged
  • Brain Stem / blood supply*
  • Central Nervous System Vascular Malformations / complications*
  • Computed Tomography Angiography
  • Cranial Fossa, Anterior / blood supply*
  • Humans
  • Hyperemia / etiology*
  • Magnetic Resonance Angiography
  • Male
  • Multimodal Imaging
  • Spinal Cord Diseases / etiology*