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Enlarged Vestibular Aqueducts (EVA)

Enlarged Vestibular Aqueducts (EVA): Vestibular aqueducts are narrow, bony canals that travel from the inner ear to inside the skull. A vestibular aqueduct is often considered enlarged if it is greater than 1.0 millimeter in size. Research suggests that most children with EVA will develop some degree of hearing loss.