Ans.192 *Abernethy malformation*

*Abernethy malformation* Congenital anomaly of the splanchnic vasculature, arises from defects in vitelline vein formation.
#Type 1, portal vein completely diverted into IVC and complete absence of formation of intrahepatic
portal vein.
#Type 2, portal venous system is formed, but there is an abnormal communication with
systemic veins, usually IVC; associated with hepatic encephalopathy and hepatopulmonary
syndrome.