Danielle Golub, Daniel G Lynch, Shyle H Mehta, Hayley Donaldson, Kevin A Shah, Timothy G White, Eric T Quach, Kyriakos Papadimitriou, Alexander F Kuffer, Henry H Woo, Thomas W Link, Athos Patsalides, Amir R Dehdashti
BACKGROUND: Pial arteriovenous fistulas (pAVFs) are rare vascular malformations characterized by high-flow arteriovenous shunting involving a cortical arterial supply directly connecting to venous drainage without an intermediate nidus. Dural arteriovenous fistulas (dAVFs) can infrequently involve additional pial feeders which can introduce higher flow shunting and increase the associated treatment risk. In the posterior fossa, arteriovenous fistula (AVF) angioarchitecture tends to be particularly complex, involving either multiple arterial feeders-sometimes from both dural and pial origins-or small caliber vessels that are difficult to catheterize and tend to be intimately involved with functionally critical brainstem or upper cervical cord structures...
April 25, 2024: Neurosurgical Review