In 7 cases of middle ear malformation with stricture of external acoustic meatus the malformation rate of facial nerve was 0.0%(/7), and that for chorda tympani . %(0/7).
In 7 cases of middle ear malformation with stricture of external acoustic meatus the malformation rate of facial nerve was 0.0%(/7), and that for chorda tympani . %(0/7).
外耳道狭窄伴中耳畸形7例中，面神经畸形率为0．0％（／7），鼓索神经畸形率为 ． ％（0／7）；