先天愚型的临床表现应除外下列哪项() ["A．智力低下","B．体格发育正常","C．特殊面容","D．喂养困难","E．抵抗力低下"]
otitis externa diffusa
21-三体综合征除特殊面容外其他常见的畸形为() ["A．atd角增大、通贯手、心脏畸形、关节可过度弯曲","B．翼颈、乳头间距宽","C．睾丸小、乳房发育","D．眼发育不良、耳道闭锁","E．并指畸形、耳廓畸形、心脏畸形"]
关于21-三体综合征下列哪项不正确() ["A．本征不属于常染色体畸变","B．小儿染色体病中最常见的一种","C．母亲年龄越大本病的发病率越高","D．60%的患儿在胎儿早期即夭折流产","E．活婴中发生率约1/600～800"]
Mondini内耳发育不全
Aural pseudocyst
