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Optic chiasmal compression by venous aneurysm: magnetic resonance imaging diagnosis
L J Wolansky1, P D Shaderowfsky, R Sander
1Department of Radiology, University of Medicine and Dentistry of New Jersey, New Jersey Medical School, Newark 07103, USA.
Abstract:
The overwhelming majority of traumatic carotid cavernous fistulas present with a bruit, arterialization of conjunctival vessels, or an elevated intraocular pressure. Described herein is a patient who presented with progressive deterioration of vision, without any of the above signs. Magnetic resonance imaging demonstrated compression of the optic ch asm by a venous aneurysm arising from a carotid cavernous fistula. This entity should be considered in patients who present with progressive visual loss.