Anomalies Associated with Single Umbilical Artery at Perinatal Autopsy.

We evaluated 214 fetuses sent for autopsy with gestational ages ranging from 12 to 39 weeks. Of these, seventeen fetuses (7.9%) had single umbilical artery. Thirteen of these fetuses were aborted after antenatal detection of severe malformations and 4 died in utero. Genito-urinary system (n=6) and central nervous system (n=4) were the most common sites of involvement. Presence of single umbilical artery warrants a detailed evaluation of the fetus for other anomalies.