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[The relation between the morphological change of supratubal recess and otitis media]

Fang Zhang1, Xuejun Jiang

  • 1Department of Otorhinolarygology-Head and Neck Surgery, the Fourth Affiliated Hospital of China Medical University, Shenyang, 110032, China.

Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi = Journal of Clinical Otorhinolaryngology Head and Neck Surgery
|March 19, 2010
PubMed
Abstract

Insights

The supratubal recess is smaller in cholesteatoma ears, suggesting its role in middle ear disease. Its size does not correlate with chronic otitis media, but its structural integrity is crucial for preventing cholesteatoma.

Area of Science:

  • Otolaryngology
  • Medical Imaging
  • Anatomy

Background:

  • The supratubal recess is an anatomical space in the middle ear.
  • Its role in middle ear pathologies, particularly otitis media, requires further investigation.

Purpose of the Study:

  • To characterize the normal anatomy of the supratubal recess.
  • To evaluate morphological changes in the supratubal recess of diseased ears.
  • To determine the relationship between supratubal recess morphology and otitis media, including cholesteatoma.

Main Methods:

  • High-resolution computed tomography (CT) was employed to visualize and measure the supratubal recess.
  • Measurements were taken from both healthy and diseased adult ears.

Main Results:

  • Normal adults exhibited specific dimensions for the supratubal recess (anteroposterior diameter: 3.83±1.28 mm, vertical diameter: 3.67±1.14 mm, height: 3.76±0.36 mm).
  • No significant size differences were found between left and right supratubal recesses or in relation to mastoid pneumatization.
  • Ears with cholesteatoma showed significantly smaller supratubal recesses compared to normal ears, with 40% exhibiting osseous destruction; however, no correlation with mastoid pneumatization was observed.
  • No significant size differences were noted between normal ears and those with chronic otitis media.

Conclusions:

  • The supratubal recess is anatomically consistent in healthy adults and unrelated to mastoid pneumatization.
  • A smaller supratubal recess, particularly in the context of eustachian tube dysfunction, may contribute to cholesteatoma formation.
  • While not significantly different in chronic otitis media, the supratubal recess's morphology is a critical factor in understanding the pathogenesis and treatment of middle ear cholesteatoma.

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