Letter: Angioarchitectural Analysis of Arteriovenous Shunts in Dural Arteriovenous Fistulas and Its Clinical Implications

In Reply: Angioarchitectural Analysis of Arteriovenous Shunts in Dural Arteriovenous Fistulas and Its Clinical Implications

“…2 Based on the histopathological studies and their experience of DAVFs, Dr Su et al point out that fistulas are not formed directly at the dural sinuses but between the dural artery and the dural vein (in the dural sinus wall) before draining into the sinus or the bridging vein. 1,3,4 We agree with these classic histopathological finding; however, the main focus of our study was to describe and discriminate the "angiographic" shunt patterns in light of the connections between the shunt, the sinus, and the cortical veins to unveil their practical implications. In this regard, there were specific patients in whom the targetable fistulous channelregarding the branching patterns and the caliber changes of the vessels-could not be identified but showed functionally direct connections with the sinus.…”

“…We would like to thank Dr Su et al 1 for sharing their insights on dural arteriovenous fistulas (DAVFs) and thoughtful and duly comments on our recent article “Angioarchitectural analysis of arteriovenous shunts in dural arteriovenous fistulas and its clinical implications.” 2…”