20耳先天性外耳道闭锁,中耳畸形,术前提示18耳听骨畸形,2耳小鼓室无听骨链,手术证实17耳外耳道闭锁,听骨严重畸形,2耳镫骨缺失,1耳前庭窗闭锁。

• VE showed 18 ears with congenital microtia and middle ear malformation and 2 ears with small tympanic cavity and no ossicular chain preoperatively, and operation proved 17 ears with severe ossicular malformation, 2 ears without stapes, 1 ear with vestibular window atresia.