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Clinical Challenge | Radiology

A Rare Cause of Bilateral Conductive Hearing Loss in a Young Boy QUIZ ONLINE FIRST

James Naples, MD1; Christopher Grindle, MD2; David Zimmerman, MD3
[+] Author Affiliations
1Department of Otolaryngology, University of Connecticut Health Center, Farmington
2Department of Clinical Otolaryngology, University of Connecticut School of Medicine, Farmington
3Jefferson Radiology, Connecticut Children's Medical Center, Hartford
JAMA Otolaryngol Head Neck Surg. Published online February 18, 2016. doi:10.1001/jamaoto.2015.3311
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A boy presented with bilateral conductive hearing loss and delayed speech development. An audiogram demonstrated moderate low-frequency conductive hearing loss in the right ear and mild conductive hearing loss in the left ear with a normal tympanogram despite normal otoscopy results. What is your diagnosis?

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A, Right-sided (45-db) and left-sided (30-db) conductive hearing loss in low frequencies (arrowheads). O and X indicate right and left air conduction, respectively; opening and brackets, right and left bone conduction, respectively. B and C, Axial computed tomographic (CT) scans of the temporal bones.

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