A<unk>  or porto-systemic<unk>  is a specific type of<unk>  that occurs between the veins of the portal circulation and those of the systemic circulation. When there is a blockage of the portal system,<unk>  enables the blood to still reach the systemic venous circulation. The inferior end of the esophagus and the superior part of the rectum are potential sites of a harmful<unk> . In portal hypertension, as in the case of cirrhosis of the liver, the<unk>  become congested and form venous dilatations. Such dilatation can lead to esophageal varices and anorectal varices. Caput medusae can also result. __TOC__
Portacaval anastomosis
Intestinal bypass
Peritoneovenous shunt
Distal splenorenal shunt procedure
Jejunoileal bypass
Hepatoportoenterostomy
Bidirectional Glenn procedure
Portacaval shunt