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. 2011 Mar;21(2):75-8.
doi: 10.1055/s-0030-1261257.

Vestibular schwannoma in patients with sudden sensorineural hearing loss

Jong Dae Lee, Byung Don Lee, Sun Chul Hwang

Vestibular schwannoma in patients with sudden sensorineural hearing loss

Jong Dae Lee et al. Skull Base. 2011 Mar.

Abstract

Sudden sensorineural hearing loss (SSNHL) has several etiologies. It may be a presenting symptom of vestibular schwannoma (VS). This study aimed to establish the incidence of VS in patients with SSNHL, and we report several unusual cases among these patients. We reviewed retrospectively the charts and magnetic resonance imaging (MRI) findings of all adult patients who presented with SSNHL between 2002 and 2008. We utilized three-dimensional fast imaging with steady-state acquisition temporal MRI as a screening method. Of the 295 patients with SSNHL, VS was found in 12 (4%). All patients had intrameatal or small to medium-sized tumors. There were three cases with SSNHL in one ear and an incidental finding of intracanalicular VS in the contralateral ear. There were four cases of VS that showed good recovery from SSNHL with corticosteroid treatment. There were two cases that mimicked labyrinthitis with hearing loss and vertigo. A greater number of cases than expected of VS were detected in patients with SSNHL, as a result of increasing widespread use of MRI. Various unusual findings in these patients were identified. MRI would seem to be mandatory in all cases of SSNHL.

Keywords: Sudden hearing loss; magnetic resonance imaging; steroid; vertigo; vestibular schwannoma.

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