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- Title
An Unusual Case of Bilateral Agenesis of the Cochlear Nerves.
- Authors
Rocha Soares, Vítor Yamashiro; Ferreira, Fabrício Mendes; Coimbra, Christiane França; Lopez Sampaio, André Luiz; De Oliveira, Carlos Augusto Costa Pires
- Abstract
Imaging of the cochlea and internal auditory canals are increasingly important nowadays because of the growing number of cochlear implants being performed throughout the world. We report a case of a 4-year-old boy who was born deaf and was being evaluated in our service for possible cochlear implantation. Audiometry disclosed profound bilateral deafness. Themagnetic resonance imaging revealed only two nerves in each inner auditory canal: one in the anterior superior quadrant, identified as the facial nerve, and one on the posterior quadrants, representing both the superior and inferior vestibular nerves. The semicircular canals were not seen and the vestibule had dysplastic morphology. The diagnosis was bilateral agenesis of the cochlear nerves and semicircular canals.
- Subjects
COCHLEAR implants; NERVOUS system abnormalities; INTERNAL auditory meatus; AUDIOMETRY; DEAFNESS; MAGNETIC resonance imaging; FACIAL nerve; VESTIBULAR nerve
- Publication
Case Reports in Neurological Medicine, 2012, p1
- ISSN
2090-6668
- Publication type
Article
- DOI
10.1155/2012/581920