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Audio-vestibular manifestations of Chiari
malformation and outcome of surgical decompression: a case report.
Ahmmed AU, Mackenzie I, Das VK, Chatterjee S, Lye RH
University Department of Otolaryngology and Audiological
medicine, Manchester Royal Infirmary, UK.
Sensorineural hearing loss, tinnitus, dizziness and ataxia
are recognised symptoms associated with Chiari malformations but they are rarely
the presenting complaints. Patients with such symptoms are frequently referred
to otolaryngologists and audiological physicians. We report a case of a
13-year-old girl who presented complaining of tinnitus and impaired hearing, and
was subsequently diagnosed as having a type I Chiari malformation. Pure tone
audiogram showed a mild hearing impairment on the left side and the speech
audiogram was normal. Auditory brain stem responses and the
electronystagmography were abnormal. The patient underwent posterior fossa
decompression following which her tinnitus disappeared, the hearing problem
recovered and some of the abnormal electrophysiological parameters were
corrected.
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