Congenital absence of the round window treated by cochlear fenestration.
D000293:Adolescent; D001299:Audiometry; D002648:Child; D003051:Cochlea / Q000002:abnormalities* / Q000601:surgery*; D034381:Hearing Loss / Q000209:etiology*; D006312:Hearing Loss, Bilateral / Q000209:etiology* / Q000235:genetics / Q000601:surgery; D006801:Humans; D008297:Male; D012405:Round Window, Ear / Q000002:abnormalities*