Persistent right umbilical vein of the fetus: Pre- and postnatal ultrasound findings, incidence, and prognosis

J. Y. Cho, Y. H. Lee, W. W. Ki, J. Y. Min, M. Y. Kim, J. H. Yang, M. J. Kim

Research output: Contribution to journalConference articlepeer-review

Abstract

Persistent right umbilical vein has been reported as an uncommon congenital variation. The purpose of this study is to report the pre- and postnatal US findings, incidence, and prognosis of the persistent right umbilical vein of fetus. 19 cases of persistent right umbilical vein were diagnosed on the screening ultrasound of 2008 fetuses from May to August, 1999. The incidence was 0.95%. On prenatal ultrasound the intrahepatic umbilical vein was connected to the right portal vein and curved toward the left portal vein. Gall bladder was located in the more left lateral portion of the umbilical vein. The branching pattern of the portal vein was the mirror-image pattern of the normal fetus. Hepatic veins and ductus venosus were normal 18 of 19 fetuses had no other anomaly. One fetus had unilateral multicystic dysplastic kidney and small ventricular septal defect. Postnatal ultrasound of 13 fetuses revealed a unique branching pattern of the portal vein. The umbilical segment was located in the right side of the gallbladder. It was branched with acute angle at the just left portion of main portal vein entrance. In conclusion right umbilical vein of the fetus is not an uncommon condition and has good prognosis without associated severe congenital anomaly. The detection of right umbilical vein is easy on the prenatal ultrasound, especially on the color Doppler ultrasound.

Original languageEnglish
Pages (from-to)A212
JournalUltrasound in Medicine and Biology
Volume26
Issue numberSUPPL. 2
StatePublished - 2000
EventThe 9th Congress of World Federation for Ultrasound in Medicine and Biology - Florence, Italy
Duration: 6 May 200010 May 2000

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