Results The constituent ratio of fetal anomaly was decreasing as dropsy of head, anencephalus, cheilopalatognathus and anterior abdominal wall discrepancy in the 53 cases.

• 结果53例胎儿畸形中发生畸形比例由大到小的依次为脑积水、唇腭裂、前腹壁缺陷、无脑儿等。