Bilateral congenital oval window microfistulae in a mother and son

Abstract
This article details case histories of a son and his mother who were studied over a seven‐year period before making the diagnosis of bilateral oval window microfistulae in both of them. The boy demonstrated a slowly progressive bilateral and symmetrical sensorineural hearing loss closely resembling thnt of his mother. The case reports emphasize their respective histories, diagnostic evaluation, surgical observations, and treatment.

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