Magnetic resonance imaging in detection of extracranial internal carotid artery dissection

Update item information
Identifier 91_24
Title Magnetic resonance imaging in detection of extracranial internal carotid artery dissection
Subject Optic Tract Lesions
Description This 28-year-old woman presented with a 4-week history of bilateral visual loss. She had a known history of multiple sclerosis. Her vision was 20/60 OD and 20/40 OS, with an RAPD OS and optic pallor OU. Her fields and MRI are shown. Optic tract lesions usually result in an incongruous homonymous hemianopsia. In the absence of an ipsilateral optic neuropathy a contralateral afferent pupillary defect in the setting of a homonymous hemianopsia localizes the lesion to the optic tract. Likewise, band, or ""bow-tie,"" atrophy (nasal fibers) of the optic nerve may occur in the contralateral eye (eye with the temporal visual field loss) in patients with optic tract lesions and a homonymous hemianopsia. Pair with Image 91_25.
Creator AAO/NANOS - American Academy of Ophthalmology / North American Neuro-Ophthalmology Society
Publisher Spencer S. Eccles Health Sciences Library, University of Utah
Type Image
Format image/jpeg
Relation is Part of Case 129
Rights Management Copyright 2002. For further information regarding the rights to this collection, please visit:
Holding Institution North American Neuro-Ophthalmology Association. NANOS Executive Office 5841 Cedar Lake Road, Suite 204, Minneapolis, MN 55416
Collection Neuro-ophthalmology Virtual Education Library: NOVEL
Contributor Primary Marilyn C. Kay, MD
Source AAO/NANOS Clinical neuro-ophthalmology : image collection for ophthalmic practitioners. American Academy of Ophthalmology [electronic resource], [San Francisco, Calif.] : AAO, c1999.
ARK ark:/87278/s6xh2qqx
Setname ehsl_novel_aao_nanos
Date Created 2004-11-17
Date Modified 2013-09-04
ID 176797
Reference URL
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