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Incidental mastoid opacification on computed tomography in the pediatric population
Journal article   Peer reviewed

Incidental mastoid opacification on computed tomography in the pediatric population

David J. Lafferty, Jason E. Cohn and Brian J. McKinnon
International journal of pediatric otorhinolaryngology, v 128, pp 109688-109688
01 Jan 2020
PMID: 31593875

Abstract

Life Sciences & Biomedicine Otorhinolaryngology Pediatrics Science & Technology
Objectives: Incidental mastoid opacification (IMO) is a common radiologic finding and source of referral to otolaryngologists. Our objectives were to: 1) determine the rate of IMO in our pediatric population; 2) identify those with clinical mastoiditis; and 3) identify factors necessitating an otolaryngology consultation. Methods: This was a retrospective chart review at an academic, tertiary, pediatric hospital in an urban setting. Pediatric patients with the keyword 'mastoid' on a computed tomography (CT) scan report were reviewed. The effect of age, gender, season and the use of contrast media on the rate of IMO was also analyzed. Chi-square analysis was used to compare the significance of categorical frequencies. Results: The rate of IMO in our cohort was 14.2% (164/1157). In children < 8 years of age, the IMO rate was 22.0% compared to 5.6% in children 8-17 years of age (p < .001). The IMO rate in male children was 16.6% compared to 11.0% in female children (p=.007). There was no statistically significant higher rate of IMO during winter (15.1%) compared to summer (9.0%) and in CT scans with contrast (16.0%) compared to without contrast (14.0%). Our department of otolaryngology was formally consulted in 3% (5/164) of IMO cases. None of those patients had clinical mastoiditis. Conclusions: This is the largest study identifying IMO on CT and in children to date. Although the overall rate of IMO in the pediatric population is 14.2%, it is rarely clinically significant.

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Collaboration types
Domestic collaboration
Web of Science research areas
Otorhinolaryngology
Pediatrics
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