Unilateral Double-Barreled Internal Auditory Meatus with Severe Sensorineural Hearing Loss: A Diagnostic Challenge

Abstract

Internal auditory meatus duplication is an exceedingly rare temporal bone anomaly. All of them being bilateral duplication or narrowing of internal auditory meatus with profound sensorineural hearing loss. We report a very rare case of unilateral double-barreled internal auditory meatus with severe sensorineural hearing loss without any inner ear anomalies in an adolescent, being benefited with an air-conduction hearing aid.