Portography of normal and regenerating dog liver

The angiographic appearance of the portal vein in the dog before and after major hepatic resection is described. An increased diameter and length of the lobar vein and their ramifications were found following resection. The appearance both in the portal and sinusoidal phase indicated a diffuse growth of the liver remnant. One week after resection a portal hypertension was recorded, which had usually receded after six weeks. Major hepatic resection seems to imply a higher risk for fatal toxic effects from the contrast medium.