A variety of congenital and acquired disorders result in pediatric conductive hearing loss. Malformations of the external auditory canal are invariably associated with malformations of the middle ear space and ossicles. Isolated ossicular malformations are uncommon. Syndromes associated with external and middle ear malformations are frequently associated with abnormal development of first and second pharyngeal arch derivatives. Chronic inflammatory disorders include cholesteatoma, cholesterol granuloma, and tympanosclerosis.
Keywords: Cholesteatoma; Cholesterol granuloma; Conductive hearing loss; Craniofacial microsomia; Ossicles; Pediatric hearing loss; Temporal bone.
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