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A Case with the Bilateral Narrow Bony Cochlear Nerve Canals Associated with Near Normal Hearing Thresholds
Korean Journal of Audiology ; : 141-144, 2012.
Article in English | WPRIM | ID: wpr-136502
ABSTRACT
The narrow bony cochlear nerve canal in high resolution temporal bone computed tomography is frequently found in patients of congenital sensorineural hearing loss. But this bony structural anomaly could not conclude the functional outcome of cochlear nerve. Here, we present a case of a 14-month-old girl having bilateral narrow bony cochlear nerve canals. In magnetic resonance imaging, both the cochlear nerves were identified to be intact. Moreover, acoustic brainstem response threshold and auditory steady state response revealed nearly normal hearing thresholds. Therefore, we suggest that the narrow bony cochlear nerve canal itself does not necessarily indicate a substantial degree of hearing loss.
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Full text: Available Index: WPRIM (Western Pacific) Main subject: Temporal Bone / Acoustics / Brain Stem / Magnetic Resonance Imaging / Cochlear Nerve / Multidetector Computed Tomography / Hearing / Hearing Loss / Hearing Loss, Sensorineural Limits: Humans Language: English Journal: Korean Journal of Audiology Year: 2012 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Main subject: Temporal Bone / Acoustics / Brain Stem / Magnetic Resonance Imaging / Cochlear Nerve / Multidetector Computed Tomography / Hearing / Hearing Loss / Hearing Loss, Sensorineural Limits: Humans Language: English Journal: Korean Journal of Audiology Year: 2012 Type: Article