I had a portal vein thrombosis approximately 9 years ago.
The bird's liver receives nearly all the blood from the stomach, gut, pancreas and spleen, as well as from the left liver itself, into the right hepatic lobe, by a right and left portal vein.
This involves placement of an expandable metallic stent between the branches of the portal vein and systemic circulation within the liver parenchyma.
U/S [Fig 3] showed a partially occlusive thrombus in the superior mesenteric vein [SMV] extending into the portal vein.
Blood full of just digested nutrients from the intestine and the stomach enter the liver via the hepatic portal vein.
