![A case of prenatal diagnosis of single umbilical artery due to thrombosis diagnosed by the ultrasound finding of “wink-sign” A case of prenatal diagnosis of single umbilical artery due to thrombosis diagnosed by the ultrasound finding of “wink-sign”](https://www.degruyter.com/document/doi/10.1515/crpm-2020-0002/asset/graphic/j_crpm-2020-0002_fig_002.jpg)
A case of prenatal diagnosis of single umbilical artery due to thrombosis diagnosed by the ultrasound finding of “wink-sign”
![Tessa Davis on Twitter: "The cord starts off life as the yolk stalk, containing the vitelline duct, fused to the body stalk containing a pair of umbilical arteries, a single umbilical vein + Tessa Davis on Twitter: "The cord starts off life as the yolk stalk, containing the vitelline duct, fused to the body stalk containing a pair of umbilical arteries, a single umbilical vein +](https://pbs.twimg.com/media/EtSM2ErWYAM1QPS.png)
Tessa Davis on Twitter: "The cord starts off life as the yolk stalk, containing the vitelline duct, fused to the body stalk containing a pair of umbilical arteries, a single umbilical vein +
![Single umbilical artery (SUA) in the fetus. How is it seen on ultrasound, is it risky for the baby? - YouTube Single umbilical artery (SUA) in the fetus. How is it seen on ultrasound, is it risky for the baby? - YouTube](https://i.ytimg.com/vi/HHHHfYVu_jU/hqdefault.jpg)
Single umbilical artery (SUA) in the fetus. How is it seen on ultrasound, is it risky for the baby? - YouTube
![Prenatal sonographic diagnosis of single umbilical artery: Emphasis on the absent side and its relation to associated anomalies - ScienceDirect Prenatal sonographic diagnosis of single umbilical artery: Emphasis on the absent side and its relation to associated anomalies - ScienceDirect](https://ars.els-cdn.com/content/image/1-s2.0-S1028455914000709-gr1.jpg)