Background: The persistent vitelline vein is a portal venous system malformation arising
during the embryonic period. These abnormal blood vessels frequently thrombose and can …

The paired vitelline veins selectively involute and form a part of the portal vein during
embryonic development. The presence of a persistent vitelline vein segment after birth is …

Umbilical vein varix is a well-described prenatal anomaly in which the prognosis remains
unclear. We describe a very rare venous malformation that mimicked an umbilical vein varix …

Discussion A PVSA is a rare abnormality, with reported postnatal incidence of 0.43%. It
represents 3% of all aneurysms of the venous system and 96.4% of all visceral vein …

We report a case of aneurysmal dilatation of a vitelline vein observed antenatally. Intra‐
abdominal vascular dilatation was diagnosed on ultrasound examination at 24 weeks' …

Vitelline veins are a pair of embryonic structures. The veins develop the portal vein system.
Serious problems occur if the vitelline vein does not regress and becomes an aneurysm …

Anomalies of the umbilical venous system are perplexing essentially due to dissection errors
and vascular connection delineation failure. Continuation of umbilical vein into the extra …

Fetal intraabdominal umbilical vein varix (FIUV) is focal dilatation of the
intrabdominalumbilical vein of thefetus. It appears as a round or fusiform cystic structure in …

We report a case of vitelline vein aneurysm detected at 23 weeks of gestation. Few postnatal
cases of vitelline vein aneurysm have been reported; however, due to their similar …

Varix of the intra-abdominal portion of the fetal umbilical vein is a very rare anomaly. It
appears on ultrasound as an echo-poor mass between the abdominal wall and the inferior …