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Case Report: Unilateral Cranial Nerve IV Palsy Secondary to Trochlear Schwannoma / Jason Jihad Gebran in OVS : Optometry & Vision Science, vol. 98, 06 (Juin 2012)
[article]
in OVS : Optometry & Vision Science > vol. 98, 06 (Juin 2012)
Titre : Case Report: Unilateral Cranial Nerve IV Palsy Secondary to Trochlear Schwannoma Type de document : article de périodique Auteurs : Jason Jihad Gebran ; Amy Jill Quan Année de publication : 2021 Langues : Français (fre) Descripteurs (mots clés) : [Thésaurus Mesh]:A:Atteintes des nerfs crâniens:Atteintes des nerfs crâniens / étiologie
[Thésaurus Mesh]Atteintes des nerfs crâniens
[Thésaurus Mesh]Diplopie
[Thésaurus Mesh]Nerfs crâniens
[Thésaurus Mesh]Neurinome
[Thésaurus Mesh]Présentations de casMots-clés : schwannome Tumeur nerveuse Schwannome Résumé : SIGNIFICANCE: Cranial nerve IV palsy is the most common cranial nerve affected in both pediatric and adult patients with vertical and/or torsional diplopia. The condition has multiple known etiologies, including schwannoma, which is rarely reported in the literature. Schwannoma should be considered when the most common etiologies have been ruled out. PURPOSE: This report documents a rare case of cranial nerve IV palsy secondary to a trochlear schwannoma. Treatment and management considerations will be discussed. CASE REPORT: A 57-year-old man presented to the clinic for evaluation of his recent-onset vertical diplopia. He was diagnosed with left cranial nerve IV palsy. MRI of the brain and orbits revealed the presence of a schwannoma along the course of his left fourth cranial nerve. It did not compress any other cranial nerves or the brainstem. The patient was referred to the neuro-ophthalmology clinic for further evaluation. He was managed conservatively with prismatic spectacle correction to relieve his diplopia. Repeat MRI of the brain and orbits was recommended every 6 months. CONCLUSIONS: Although rare, schwannoma of the fourth cranial nerve should be considered in cases of cranial nerve IV palsies without an obvious etiology. Neuroimaging of the brain and orbits is warranted in cases where more common etiologies have been ruled out or when other cranial nerves and/or the brainstem are involved. Permalink : https://bibliotheque.helb-prigogine.be/opac_css/index.php?lvl=notice_display&id= [article]Exemplaires
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