Chenyu Chen, Xiying Huang, Zhen Chen, Yang Liu, Zhifeng Chen, Chaojun Zeng, Yuqing Chen, Shengqing Nian, Simin Weng, Yuanteng Xu, Chang Lin

The Age-Related Growth of Mastoid Air Cells in Infancy: A Retrospective Cross-Sectional Study

  • Neurology (clinical)
  • Sensory Systems
  • Otorhinolaryngology
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Objectives To investigate the normal growth and development of mastoid pneumatization volume from 5 to 12 months for pediatric otosurgeons. Study Design Retrospective chart review. Setting A tertiary referral center. Patients This study evaluated age-dependent changes in mastoid air cell volume in 94 (188 ears) patients aged 5 to 12 months without a history of middle ear disease. Main Outcome Measures Volume reconstruction was based on high-resolution computed tomography images using a three-dimensional reconstruction that is considered normal by radiologists. One-way analysis of variance and linear regression were used to determine the relationship between the volume and age in male and female subjects. Results Forty-eight scans were from male and 46 from female patients. In the age group from 5 to 12 months, the mastoid pneumatization was independent of age (p > 0.05). There were no significant volume differences found between the age groups. Neither male/female nor right/left significant differences were observed in relation to the algebraic data of the mastoid air cells volume (p > 0.05). Conclusions Based on this analytic study, we are the first to use three-dimensional volume quantification based on high-resolution computed tomography in such large samples of early infancy. Because of its potential role as a susceptibility factor for otitis media and other otologic problems, it is important to describe the growth and development of mastoid pneumatization. More extensive clinical studies are needed to give a comprehensive insight into the air cell volume across age groups in different populations.

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