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Definition

A syndrome characterized by usually bilateral branchial cleft fistulas or cysts, sensorineural and/or conductive hearing loss, pre-auricular pits, and structural defects of the outer, middle or inner ear. Otic defects include malformed and hypoplastic pinnae, a narrowed external ear canal, bulbous internal auditory canal, stapes fixation, malformed and hypoplastic cochlea. Branchial and otic anomalies overlap with those seen in individuals with the branchiootorenal syndrome. However renal anomalies are absent in branchiootic syndrome patients.

Acronym

BOS3

Synonyms

BO syndrome 3
Branchio-otic dysplasia 3
Branchio-otic syndrome 3

Keywords

Deafness

 
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