Persistent Right Umbilical Vein

Persistent right umbilical vein: a prenatal condition worth mentioning?

“…In our series, fetuses with situs anomalies and heterotaxy were excluded from the analysis. Some authors, however, included these cases of PRUV in their series3, 4, 8, 10, 27, 29. Generally, in the presence of additional abnormalities, karyotype examination might be reasonable, although in the available literature only 6/76 cases (7.9%) of non‐isolated PRUV had aneuploidies (our two cases and four fetuses with trisomy 18).…”

“…Table S1 summarizes previous studies on PRUV published to date1–35. A total of 302 cases—including the present series—were reviewed.…”

Umbilical vein entering the right atrium: significance of in utero diagnosis

“…In none of the six cases reported by Jeanty was there direct extension of the right umbilical vein into the right atrium. 3 In fact, to our knowledge, only four reports of this anomaly, none of which were diagnosed prenatally, 4 -1 have been published. The importance of identifying this uncommon anomaly on prenatal sonograms is because of its asso· ciation with other structural anomalies.…”

Type 1 Congenital Extrahepatic Portosystemic Shunt

“…3 The right typically involutes; however, it may persist and connect with the anterior branch of the right portal vein. [4][5][6] If it fails to involute, or neither involutes, and there is also failure of the portal venous branches to form, there may be persistent buds of the right or left portal vein, or both. In this particular case, presumably the right umbilical vein involuted as expected, and when the left umbilical vein involuted after birth, a stump of the left portal vein remained.…”