Transhepatic Embolization of Congenital Intrahepatic Portosystemic Venous Shunts with Associated Aneurysms

Table 2

Classification of congenital PSVS [17]. CAPV indicates congenital absence of the portal vein.

Type	Description
I	No intrahepatic portal flow (CAPV or type I Abernethy malformation)
II	Partial shunt with preserved hepatic portal flow (type II Abernethy malformation)
IIa	Arising from left or right portal vein (including PDV)
IIb	Arising from main portal vein (including its bifurcation or splenomesenteric confluence)
IIc	Arising from the mesenteric, gastric, or splenic veins