Dural Venous Channels: Hidden in Plain Sight-Reassessment of an Under-Recognized Entity.

AJNR. American Journal of Neuroradiology
Maksim ShapiroPeter Kim Nelson

Abstract

Tentorial sinus venous channels within the tentorium cerebelli connecting various cerebellar and supratentorial veins, as well as the basal vein, to adjacent venous sinuses are a well-recognized entity. Also well-known are "dural lakes" at the vertex. However, the presence of similar channels in the supratentorial dura, serving as recipients of the Labbe, superficial temporal, and lateral and medial parieto-occipital veins, among others, appears to be underappreciated. Also under-recognized is the possible role of these channels in the angioarchitecture of certain high-grade dural fistulas. A retrospective review of 100 consecutive angiographic studies was performed following identification of index cases to gather data on the angiographic and cross-sectional appearance, location, length, and other features. A review of 100 consecutive dural fistulas was also performed to identify those not directly involving a venous sinus. Supratentorial dural venous channels were found in 26% of angiograms. They have the same appearance as those in the tentorium cerebelli, a flattened, ovalized morphology owing to their course between 2 layers of the dura, in contradistinction to a rounded cross-section of cortical and bridging veins. They a...Continue Reading

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Citations

Mar 27, 2021·AJNR. American Journal of Neuroradiology·Gerasimos BaltsaviasHeinrich Lanfermann
Oct 24, 2020·Surgical Neurology International·Dan Zimelewicz ObermanPablo Ajler

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