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Prevalence of otic capsule dehiscence in temporal bone computed tomography scan

  • Otology
  • Published:
European Archives of Oto-Rhino-Laryngology Aims and scope Submit manuscript

Abstract

Purpose

To investigate the radiologic prevalence of otic capsule dehiscence in temporal bone computed tomography (CT) scan.

Methods

This was a cross-sectional study. The temporal bone CT scans of the patients presenting to a tertiary center were evaluated for possible dehiscence in any part of the otic capsule; then, all of the dehiscence were confirmed by a trained academic radiologist. For each type of otic capsule dehiscence, at least three planes were used with a specific type of reconstruction. When a dehiscence was present in at least two consecutive images in all planes, it was considered as a true dehiscence.

Results

Six hundred patients (mean age: 40 ± 18.1 years) were enrolled. The prevalence of superior and posterior semicircular canal dehiscence was 6.0% and 2.7%, respectively. The prevalence of cochlear-facial dehiscence, cochlear-internal auditory canal dehiscence, and cochlear-carotid dehiscence was 6.3%, 0.7%, and 0.7%, respectively. The prevalence of vestibular aqueduct-jugular bulb dehiscence was 6.3% and the prevalence of posterior semicircular canal-jugular bulb dehiscence was 0.2%.

Conclusions

Considering different types of otic capsule dehiscence described, care should be taken in patients with vestibular and auditory signs and symptoms to diagnose these dehiscences.

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Acknowledgements

The research was fully sponsored by the Otorhinolaryngology Research Center of the Tehran

University of Medical Sciences.

Funding

This study received no funding.

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Authors and Affiliations

  1. Otorhinolaryngology Research Center, Tehran University of Medical Sciences, Tehran, Iran

    Masoud Motasaddi Zarandy, Ali Kouhi, Hamed Emami & Behrooz Amirzargar

  2. Department of Otorhinolaryngology-Head and Neck Surgery, Tehran University of Medical Sciences, Tehran, Iran

    Masoud Motasaddi Zarandy, Ali Kouhi, Hamed Emami & Behrooz Amirzargar

  3. Department of Radiology, Amiralam Hospital, Tehran University of Medical Sciences, Tehran, Iran

    Mohammad Ali Kazemi

Authors
  1. Masoud Motasaddi Zarandy
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  2. Ali Kouhi
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Correspondence to Behrooz Amirzargar.

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Motasaddi Zarandy, M., Kouhi, A., Emami, H. et al. Prevalence of otic capsule dehiscence in temporal bone computed tomography scan. Eur Arch Otorhinolaryngol 280, 125–130 (2023). https://doi.org/10.1007/s00405-022-07464-x

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