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Free Content The Ossicles in Pediatric Conductive Hearing Loss

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Congenital ossicular anomalies are important, often-missed causes of pediatric conductive hearing loss that may occur in isolation or as part of a syndrome. Accurately identifying and describing ossicular anomalies is important for determining treatment options and surgical planning. We review ossicular development, anatomy, and CT imaging findings of both nonsyndromic and syndromic congenital anomalies, including branchio-oto-renal syndrome, Treacher Collins syndrome, CHARGE (Coloboma of the eye, Heart defects, Atresia of the choanae, Retardation of growth and/or development, Genital and/or urinary abnormalities, and Ear abnormalities and deafness) syndrome, 22q11.2 deletion syndrome, hemifacial microsomia, Cornelia de Lange syndrome, and cleidocranial dysostosis.

Learning Objective: Review normal anatomy and development of the ossicles, and identify imaging features of various congenital ossicular anomalies.

Keywords: BOR = branchio-oto-renal; CHARGE = Coloboma of the eye, Heart defects, Atresia of the choanae, Retardation of growth and/or development, Genital and/or urinary abnormalities, and Ear abnormalities and deafness; CN = cranial nerve; EAC = external auditory canal; HFM = hemifacial microsomia; IAC = internal auditory canal; MEC = middle ear cavity; SCC = semicircular canal

Document Type: Research Article

Publication date: October 1, 2020

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  • Neurographics is the peer-reviewed, quarterly educational journal of the American Society of Neuroradiology. The journal includes review articles as well as high-yield case reports that have been solicited from society meetings including the annual ASNR meeting as well as the American Society of Spine Radiology, the American Society of Pediatric Neuroradiology, the American Society of Functional Neuroradiology, and the American Society of Head and Neck Radiology meetings. Unsolicited educational review articles and case reports are also accepted for review at the discretion of the Editor-in-Chief. Submissions focusing on a pictorial approach to educational objectives are highly encouraged. The journal is open access and available online. CME credit is offered for reading review articles and completing quiz-based self-assessment activities through the ASNR Education Connection portal.

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