Type I Spinal Arteriovenous Fistula with Ventral Intradural Venous Drainage: A Proposal of a Modified Classification
- PMID: 30459865
- PMCID: PMC6208246
- DOI: 10.4103/ajns.AJNS_100_17
Type I Spinal Arteriovenous Fistula with Ventral Intradural Venous Drainage: A Proposal of a Modified Classification
Abstract
Objectives: Spinal arteriovenous fistula (AVF) is the most common spinal vascular lesion and constitutes an abnormal communication between a feeder artery and a draining vein. Arterialization of the venous plexus leads to venous hypertension; consequent edema and congestion of the spinal cord are associated with progressive neurological decline.
Patients and methods: In this report, we describe two unique cases of type I cervical spinal AVF, in which a radiculomeningeal artery forms an intradural fistula that drains into the ventral venous plexus.
Results: Both patients underwent surgical obliteration of the fistula with complete occlusion confirmed on postoperative angiography.
Conclusion: Both cases do not fit into the current classification scheme. A modified classification is proposed.
Keywords: Arteriovenous; Type I; arteriovenous fistulas; classification; fistula; spinal; venous plexus; ventral.
Conflict of interest statement
There are no conflicts of interest.
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