"Rex shunt: mesenterico-left portal vein shuntRex segment (umbilical segment of the left portal vein) must be patent for thisretrograde portography may be used to identify its patency if non-invasive imaging fails"
"Rex shunt: mesenterico-left portal vein shuntRex segment (umbilical segment of the left portal vein) must be patent for thisretrograde portography may be used to identify its patency if non-invasive imaging fails"