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Classification of Temporal Bone Pneumatization on High-Resolution Computed Tomography: Prevalence Patterns and

Arthur Dexian Tan1, Jia Hui Ng2, Su Ann Lim2

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Otolaryngology--Head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery
|May 30, 2018
PubMed
Summary

Temporal bone pneumatization patterns vary by region, with hyperpneumatization most common in the mastoid. Younger age and male sex are linked to increased pneumatization in specific temporal bone areas.

Keywords:
computed tomographyhigh resolutioninfralabyrinthinemastoidpetrous apexpneumatizationtemporal bone

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Area of Science:

  • Anatomy
  • Radiology
  • Otolaryngology

Background:

  • Temporal bone pneumatization influences the pathophysiology and surgical management of various temporal bone disorders.
  • Understanding pneumatization patterns is crucial for accurate diagnosis and treatment planning.

Purpose of the Study:

  • To identify common pneumatization patterns in the petrous apex, mastoid, and infralabyrinthine compartments of the temporal bone.
  • To determine variables associated with temporal bone pneumatization.

Main Methods:

  • A retrospective review of 299 normal high-resolution computed tomography scans of the temporal bone from patients aged 13 years and older.
  • Classification of pneumatization patterns using established grading systems for the petrous apex, mastoid, and infralabyrinthine regions.

Main Results:

  • The most frequent patterns were Group 2 in the petrous apex (54.8%), Group 4 (hyperpneumatization) in the mastoid (55.4%), and Type B (limited pneumatization) in the infralabyrinthine region (76.0%).
  • Increased pneumatization in one compartment correlated with increased pneumatization in contralateral and ipsilateral compartments.
  • Younger age and male sex were significantly associated with increased pneumatization in the petrous apex and infralabyrinthine compartments.

Conclusions:

  • Temporal bone pneumatization exhibits variability across different compartments.
  • Age and sex are significant factors influencing the degree of pneumatization in the petrous apex and infralabyrinthine regions.