Fig. 7

Congenital extrahepatic portosystemic shunt—Abernethy malformation. a VRT image from portal venous phase CT presents a type II Abernethy malformation. SV converges with the SMV giving rise to the main PV. After that, the main PV lacks the classic branching pattern into right and left PV. Instead, a large and dominant aberrant left PV reaches the systemic venous system draining into IVC. Taking into account the origin, the route, and the final confluence with IVC, this aberrant left PV-IVC shunt was interpreted as a patent ductus venosus. b Late arterial phase contrast-enhanced MDCT images demonstrate this was a partial shunting, as we can see small branches arising from the main PV and left PV for both lobes