title: Unusual presentations of cavernous carotid aneurysms: further evidence for topographic organization of the oculomotor nerve.
abstract: Two patients with carotid cavernous aneurysms presented with uncommon patterns of third nerve involvement, one with an isolated elevation deficit without ptosis and the other with a depression deficit with possible pupillary involvement. These patterns are best explained by topographic organization of third nerve fibers within the cavernous sinus (prior to its anatomic bifurcation) that subserve individual extraocular muscles.
authors.affiliation: Scheie Eye Institute Department of Ophthalmology, University of Pennsylvania School of Medicine, Philadelphia, PA, USA.
authors.forename: Sudha
authors.initials: S
authors.lastname: Nallasamy
authors.forename: Sebastian
authors.initials: S
authors.lastname: Lesniak
authors.forename: Nicholas J
authors.initials: NJ
authors.lastname: Volpe
authors.forename: Madhura A
authors.initials: MA
authors.lastname: Tamhankar
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D002426:Cavernous Sinus / Q000473:pathology; D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods; D002532:Intracranial Aneurysm / Q000000981:diagnostic imaging*; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D009802:Oculomotor Nerve / Q000000981:diagnostic imaging* / Q000473:pathology*; D014057:Tomography, X-Ray Computed / Q000379:methods