Fetal Intra-abdominal Umbilical Vein Varix Complicated with Patent Ductus Venosus and Atrial Septal Defect / 대한주산의학회잡지

Umbilical vein varix has diverse clinical features and an unpredictable course during the pregnancy and/or perinatal period. We report a rare case of isolated fetal varix of the intra-abdominal umbilical vein, which was associated with fetal cardiomegaly. After birth, the umbilical vein varix remained with continuous blood flow through the patent ductus venosus. In addition, persistent cardiomegaly was complicated with an atrial septal defect.

Fetal Intra-Abdominal Umbilical Vein Varix in Monochorionic Twins: Is it Significant?

A 30-years-old Taiwanese female in her second pregnancy spontaneously conceived a monochorionic twin pregnancy. A routine ultrasound at 27 weeks of gestation revealed a selective intrauterine growth restriction (sIUGR) fetus and an appropriate gestational age (AGA) fetus. The AGA fetus was found to have a fetal intra-abdominal umbilical vein (FIUV) varix. Serial ultrasounds showed no changes in the FIUV varix. 2 weeks later, the pregnancy progressed to twin–twin transfusion syndrome (TTTS). Repeated amnioreductions were required at 29 and 30 weeks gestation. The babies were delivered by caesarean section at 31 weeks due to fetal distress in the sIUGR fetus. Both fetuses survived the neonatal period with problems of prematurity. The FIUV varix disappeared a few days after delivery.

A case of one fetal demise of twin pregnancy by umbilical artery stricture / 대한주산의학회잡지

A death of one fetus in twin pregnancy is a rare obstetric complication. And the stenosis of umbilical cord artery is a very rare complication of cord abnormalities. The umbilical cord showed a false knot due to accentuation of a vascular spiral with a dilated vein and two arteries with incomplete patency of the lumen. This is the first report of single demise of twin pregnancy due to umbilical artery stenosis and umbilical vein varix.

A Case of Varix of the Fetal Intra-Abdominal Umbilical Vein and Review of the Literature / 대한산부인과학회잡지

Varix of the intraabdominal portion of the fetal umbilical vein is a rare entity. We present a case of varix of the intrafetal umbilical vein diagnosed by routine prenatal ultrasonography at 35 weeks of gestation. Color Doppler examination of the abnormal umbilical vein demonstrated turbulent flow through 23-mm diameter cystic dilatation of the fetal intra-abdominal umbilical vein consistent with a varix. No other sonographic abnormalities were detected, and a healthy infant was delivered at term.