Computed tomography demonstrates abnormalities of contralateral ear in subjects with unilateral sensorineural hearing loss

International Journal of Pediatric Otorhinolaryngology
Sonya MarcusAdele K Evans

Abstract

Prior studies have associated gross inner ear abnormalities with pediatric sensorineural hearing loss (SNHL) using computed tomography (CT). No studies to date have specifically investigated morphologic inner ear abnormalities involving the contralateral unaffected ear in patients with unilateral SNHL. The purpose of this study is to evaluate contralateral inner ear structures of subjects with unilateral SNHL but no grossly abnormal findings on CT. IRB-approved retrospective analysis of pediatric temporal bone CT scans. 97 temporal bone CT scans, previously interpreted as "normal" based upon previously accepted guidelines by board certified neuroradiologists, were assessed using 12 measurements of the semicircular canals, cochlea and vestibule. The control-group consisted of 72 "normal" temporal bone CTs with underlying SNHL in the subject excluded. The study-group consisted of 25 normal-hearing contralateral temporal bones in subjects with unilateral SNHL. Multivariate analysis of covariance (MANCOVA) was then conducted to evaluate for differences between the study and control group. Cochlea basal turn lumen width was significantly greater in magnitude and central lucency of the lateral semicircular canal bony island was signi...Continue Reading

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Citations

Aug 9, 2016·International Journal of Pediatric Otorhinolaryngology·Lata A Krishnan, Shannon Van Hyfte
Mar 15, 2015·The Annals of Otology, Rhinology, and Laryngology·Eric J FormeisterOliver F Adunka
May 28, 2019·The Laryngoscope·Noga LipschitzJohn H Greinwald

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