Patel S, Suchet I
College of Medicine, University of Saskatchewan, Saskatoon, Canada.
Ultrasound Obstet Gynecol. 2004 Nov;24(6):684-91. doi: 10.1002/uog.1758.
Sirenomelia is a rare congenital abnormality characterized by a variety of anomalies involving the lower limbs, severe oligohydramnios, bilateral renal agenesis, anorectal atresia and aberrant fetal vasculature. The prenatal diagnosis and differentiation from isolated bilateral renal agenesis is severely limited by the accompanying oligohydramnios that hinders visualization of fetal anatomy. We present three prospectively assessed cases of sirenomelia, two of which had bilateral renal agenesis, and all of which had a single umbilical artery derived from the aberrant vasculature that accompanies the syndrome.
并腿畸形是一种罕见的先天性异常，其特征是涉及下肢的多种异常、严重羊水过少、双侧肾缺如、肛门直肠闭锁以及异常的胎儿血管系统。由于伴随的羊水过少会妨碍胎儿解剖结构的可视化，产前诊断以及与孤立性双侧肾缺如的鉴别受到严重限制。我们报告了三例经前瞻性评估的并腿畸形病例，其中两例有双侧肾缺如，并且所有病例都有一条来自伴随该综合征的异常血管系统的单脐动脉。
