Abstract
This article offers an overview of congenital and acquired vascular anomalies involving the portal venous system in dogs and cats, as determined by multidetector-row computed tomography angiography. Congenital absence of the portal vein, portal vein hypoplasia, portal vein thrombosis and portal collaterals are described. Portal collaterals are further discussed as high- and low-flow connections and categorized in hepatic arterioportal malformation, arteriovenous fistula, end-to-side and side-to-side congenital portosystemic shunts, acquired portosystemic shunts, cavoportal and porto-portal collaterals. Knowledge of different portal system anomalies helps understand the underlying physiopathological mechanism and is essential for surgical and interventional approaches.
Highlights
The portal venous system is essential for the maintenance of the liver mass and function in mammals
We present an overview of normal anatomy of the portal system, as seen by Multidetector-row computed tomography (MDCT)
In cases immediately activated to re-establish thehepatic portalsinusoids, flow to formation the liver and smallhepatopetal arterial–portal connections circulation and normal pressure in the multiple collateral vessels form of complete extrahepatic portal vein obstruction, characterized by high pressure in the splanchnic may form within the liver.segment
Summary
The portal venous system is essential for the maintenance of the liver mass and function in mammals. The portal bytrunk, the confluence of cranial caudal mesenteric veins, One which right The branch is asystem short forms venous which supplies theand right portion of the liver. The portal vein divides into right and left branches (Figure 2) [25] At this level, the portal vein pattern is almost constant, while the number of the portal branches entering individual liver lobes can vary among subjects [26,27]. The left branch of the portal vein provides several primary branches supplying the central and left portions of the liver, comprising the right medial, quadrate, left medial and left lateral lobes. Provides several primary branches supplying the central and left portions of the liver, comprising the right medial, quadrate, left medial and left lateral lobes. Gastric vein; crPDV cranial pancreatic duodenal vein; SV, splenic vein; MVV, mesenteric veins
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
