Case of the Month
Section Editor: Nicholas Stence, MD
Children's Hospital Colorado, Aurora, CO
February 2018
Next Case Coming March 6...
Dural Arteriovenous Fistula (DAVF)
- Background:
- Fed by meningeal arteries with drainage into dural venous sinuses, meningeal veins, or subarachnoid veins
- 15% of intracranial vascular malformations
- Clinical Presentation:
- Idiopathic or associated with trauma, infection, venous sinus thrombosis, or previous craniotomy
- Key Diagnostic Features:
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Cortical venous drainage is a significant factor for aggressive behavior, as is venous ectasia.
- SWI is superior to conventional MR imaging in the detection of dilated veins associated with DAVF.
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Presence of SWI hyperintensity within the venous structure can be a useful indicator of retrograde leptomeningeal venous drainage in patients with DAVF.
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