Bilateral Cochlear Otosclerosis; Clinic and Radiologic Findings

Year 2019, Volume: 24 Issue: 2, 155 - 158, 13.06.2019

Hasan Çanakcı , Erdoğan Bülbül

https://doi.org/10.21673/anadoluklin.453418

Abstract

Otosclerosis
is a focal osseous dyscrasia of the temporal bone in human. It can be
categorized into 2 types: Fenestral and retrofenestral/cochlear,
depending on the topography of the lesions. According to the
involvement of disease different symptoms might be seen such as
conductive, sensorineural, or mixt type hearing loss. Altough the
certain diagnosis of disease is histopathologic investigation, high
resolution computed tomography (HRCT) is the gold standard imaging
modality in the diagnosis of otosclerosis. In this case, Forty-one
years old female patient who suffers from unilateral mixt type
hearing loss in her right ear was presented. Although there was only
traffic accident in the past there was no evidence of ossicle
dislocation and any disease that might cause conductive hearing loss
on HRCT imaging. Bilateral cochlear otosclerosis was observed on
HRCT. Her right ear was thought to be affected by cochlear
otosclerosis expanded to the lateral wall of the otic capsule that
had been caused a mixt type hearing loss in the right and a
sensorineural hearing loss in the left. We revealed incidentally
fenestral and cochlear type represented in continium in her right
ear.It is important to perform radiologic investigation to clarify
the concomitant pathologies in hearing loss.

Keywords

Otosclerosis, Hearing Loss, High resolution computed tomography

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