Congenital intrahepatic portosystemic shunt classification

This congenital intrahepatic portosystemic shunt classification was proposed by Park et al. in 1990 :

• type 1: single large vessel of constant diameter connecting the right portal vein to the inferior vena cava
• type 2: localized, peripheral shunt with one or more communications in a single hepatic segment
• type 3: peripheral portal and hepatic veins connected through an aneurysm
• type 4: multiple communications between the peripheral portal and hepatic veins in several segments

In addition to the above, a fifth type has been suggested :

• type 5: persistent ductus venosus 

See also

• congenital portosystemic shunt