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PubMed · 12743665

Narrow, duplicated internal auditory canal.

T Ferreira·B Shayestehfar·R Lufkin
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Abstract

A narrow internal auditory canal (IAC) constitutes a relative contraindication to cochlear implantation because it is associated with aplasia or hypoplasia of the vestibulocochlear nerve or its cochlear branch. We report an unusual case of a narrow, duplicated IAC, divided by a bony septum into a superior relatively large portion and an inferior stenotic portion, in which we could identify only the facial nerve. This case adds support to the association between a narrow IAC and aplasia or hypoplasia of the vestibulocochlear nerve. The normal facial nerve argues against the hypothesis that the narrow IAC is the result of a primary bony defect which inhibits the growth of the vestibulocochlear nerve.

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Ear, InnerFacial NerveFemaleHearing Loss, SensorineuralHumansMagnetic Resonance ImagingMiddle AgedTomography, X-Ray ComputedVestibulocochlear NerveCase ReportsJournal ArticleReview

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T Ferreira, B Shayestehfar, R Lufkin. 2003-03-22. Narrow, duplicated internal auditory canal.. https://doi.org/10.1007/s00234-003-0957-5

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