Persistent ductus venosus
Incidental findings of abnormal vascular hepatic malformation in routine ultrasound of the abdomen
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The MRI shows a persistent ductus venosus (arrow) that connects the left portal vein with the middle hepatic vein.
There is also a stenosis of the intrahepatic VCI with intrahepatic adjacent venous collaterals.
Abnormal vascular connections are occasionally seen at ultrasonography and require further evaluation. Park et al have categorized intrahepatic portosystemic shunts into four morphologic types. A persistent ductus venosus could be considered as a fifth type of portosystemic shunt.