Sirtori M, Ghidini A, Romero R, Hobbins J C
Department of Obstetrics and Gynecology, Yale University School of Medicine, New Haven, Connecticut 06510.
J Ultrasound Med. 1989 Feb;8(2):83-8. doi: 10.7863/jum.1989.8.2.83.
Prenatal sonographic findings of sirenomelia (or mermaid fetus) were retrospectively reviewed in eleven proven cases. Sonography showed oligohydramnios in all the cases, five (45%) of which had severe oligohydramnios that limited prenatal diagnosis by poor visibility. In five cases (45%), sirenomelia was correctly diagnosed by ultrasound; in the remainder, only bilateral renal agenesis was identified. All eleven fetuses had other associated malformations: congenital heart defects (4), skeletal deformities (10), and abdominal wall defects (4). Death resulted from termination of pregnancy in six cases and stillbirth in three cases. Two newborns died at 24 and 36 hours of neonatal life, respectively. We concluded that some cases of sirenomelia can be detected on prenatal sonograms by demonstration of a single lower extremity, oligohydramnios, and bilateral renal agenesis. Sirenomelia is a lethal condition and can be detectable in the second trimester of pregnancy, allowing for termination of pregnancy.
对11例确诊的并腿畸形（或美人鱼胎儿）的产前超声检查结果进行了回顾性分析。超声检查显示所有病例均有羊水过少，其中5例（45%）有严重羊水过少，因视野不佳限制了产前诊断。5例（45%）通过超声正确诊断为并腿畸形；其余病例仅发现双侧肾缺如。所有11例胎儿均有其他相关畸形：先天性心脏缺陷（4例）、骨骼畸形（10例）和腹壁缺陷（4例）。6例因终止妊娠死亡，3例死产。2例新生儿分别在出生后24小时和36小时死亡。我们得出结论，一些并腿畸形病例可通过产前超声检查发现单一下肢、羊水过少和双侧肾缺如而得以诊断。并腿畸形是一种致命疾病，在妊娠中期即可检测到，从而可进行终止妊娠。
