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Absent ductus venosus

Agenesis of the ductus venosus (ADV) is an extremely rare anomaly.


There can be at least four main patterns of abnormal venous circulation when the ductus venosus is absent 4-5

  1. umbilical vein (UV) bypasses the liver and drains into the right atrium directly or through a dilated coronary sinus
    • ​​considered the most common type and carries worst prognosis due to risk of developing congestive cardiac failure 11
  2. UV bypasses the liver, with an infrahepatic or suprahepatic connection directly to the inferior vena cava (IVC)
  3. UV bypasses the liver and drains directly into the iliac or renal veins
  4. UV drains directly into the portal veins

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