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American Journal of Neuroradiology, Vol 12, Issue 4 641-645, Copyright © 1991 by American Society of Neuroradiology

ARTICLES

Dilated intercavernous sinuses: an MR sign of carotid-cavernous and carotid-dural fistulas

AD Elster, MY Chen, DN Richardson and PR Yeatts
Department of Radiology, Bowman Gray School of Medicine, Wake Forest University, Winston-Salem, NC 27103.

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.




Copyright © 2008 by the American Society of Neuroradiology. Print ISSN: 0195-6108 Online ISSN: 1936-959X