[Exostosis of the internal auditory canal in a patient with myotonic dystrophy]

C Arnoldner, T Stöver, S H Bartling, A Windhagen, M Durisin, T Averbeck, T Lenarz

Klinik und Poliklinik für Hals-Nasen-Ohrenheilkunde, Medizinische Hochschule Hannover, Carl-Neuberg-Strasse 1, 30625 Hannover.

Journal Article: Laryngo-Rhino-Otologie (impact factor: 0.3). 11/2006; 85(10):755-9. DOI: 10.1055/s-2005-921214

Abstract

A 53-year-old patient with myotonic dystrophy presented to our clinic with progressive bilateral hearing loss. The ENT status and particularly the otological examination were without pathological signs. Pure tone audiograms showed a bilateral moderate to severe sensorineural hearing loss. Routinely performed computed tomography of the temporal bones revealed the rare picture of exostosis of the internal auditory canals and the medial surface of the petrous bones. To our knowledge, this is the first report describing exostosis of the internal auditory canal in a patient with myotonic dystrophy, although at present it remains unclear in how far there is a causal connection between these two pathologies.

Source: PubMed

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Keywords

bilateral moderate
 
computed tomography
 
ENT status
 
internal auditory canal
 
internal auditory canals
 
medial surface
 
myotonic dystrophy
 
pathological signs
 
progressive bilateral hearing loss
 
rare picture
 
Routinely
 
severe sensorineural hearing loss
 
two pathologies