Cerebral dural arteriovenous fistulas: clinical and angiographic correlation with a revised classification of venous drainage. Academic Article uri icon

Overview

abstract

  • PURPOSE: To review the symptoms and progression of dural arteriovenous fistulas (AVFs) and correlate the findings with various angiographic patterns. MATERIALS AND METHODS: Patterns of venous drainage allowed classification of dural AVFs into five types: type I, located in the main sinus, with antegrade flow; type II, in the main sinus, with reflux into the sinus (IIa), cortical veins (IIb), or both (IIa + b); type III, with direct cortical venous drainage without venous ectasia; type IV, with direct cortical venous drainage with venous ectasia; and type V, with spinal venous drainage. RESULTS: Type I dural AVFs had a benign course. In type II, reflux into the sinus induced intracranial hypertension in 20% of cases, and reflux into cortical veins induced hemorrhage in 10%. Hemorrhage was present in 40% of cases of type III dural AVFs and 65% of type IV. Type V produced progressive myelopathy in 50% of cases. CONCLUSION: This classification provides useful data for determination of the risk with each dural AVF and enables decision-making about the appropriate therapy.

publication date

  • March 1, 1995

Research

keywords

  • Arteriovenous Fistula
  • Cerebral Arterial Diseases
  • Cerebral Veins
  • Dura Mater

Identity

Scopus Document Identifier

  • 0028938704

Digital Object Identifier (DOI)

  • 10.1148/radiology.194.3.7862961

PubMed ID

  • 7862961

Additional Document Info

volume

  • 194

issue

  • 3