Abstract
A Congenital portosystemic shunt was found in a 59-day-old female Holstein calf. The portal vein joining the splenic and cranial mesenteric veins communicated with the caudal vena cava through a large shunt vessel caudal to the liver. The portal vein ran toward the porta of liver and continued to the left ramus of the portal vein. The right ramus of the portal vein could not be detected. The liver was small and intrahepatic portal branches were hypoplastic. Hepatocytes exhibited mild degenerative changes in the peripheral zone of the lobule.
