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Updated: Oct 12, 2026

A Methodological Approach to Non-invasive Assessments of Vascular Function and Morphology
Published on: February 7, 2015
Dilated intercavernous sinuses: an MR sign of carotid-cavernous and carotid-dural fistulas
A D Elster1, M Y Chen, D N Richardson
1Department of Radiology, Bowman Gray School of Medicine, Wake Forest University, Winston-Salem, NC 27103.
Abstract:
Dilated venous channels traversing the sella and connecting the two cavernous sinuses were seen on contrast-enhanced MR images in four patients with angiographically proved carotid fistulas. The anatomy and variations of these so-called intercavernous sinuses are discussed and are demonstrated in Latex-injected anatomic specimens. Direct visualization of the intercavernous sinuses on contrast-enhanced MR images may serve as an ancillary sign for the diagnosis of carotid-cavernous or carotid-dural fistulas near the sella.
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