B超检查是孕检中必不可少的检查手段。据全国妇幼卫生监测结果分析报告显示,近10年来,胎儿畸形发生率在我国呈上升趋势。检查出的胎儿畸形可谓千奇百怪——无脑儿、脑积水、唇裂、内脏外翻等畸形屡见不鲜,诊断较为困难的单侧肢体远端畸形等也时有发现。 B-ultrasound is an essential test during pregnancy test. According to the national maternal and child health monitoring results analysis report shows that the past 10 years, the incidence of fetal malformations in our country is on the rise. Check out the fetal abnormalities can be described as strange - no brain children, hydrocephalus, cleft lip, visceral valgus and other deformities are common, more difficult to diagnose the distal unilateral limb deformities have also been found.