Abstract
It is well known that the biliary tract disease causes extrahepatic portal vein obstruction (EHO), and there are some reports that EHO complicates obstructive jaundice and/or common bile duct stones. To search for the cause of these phenomena, we examined ERCP and PTC in 11 cases of EHO unrelated to a biliary disease, and then we studied the appearance of these cholangiograms. In all cases, stenosis was observed on the middle and lower bile duct, and in 7 out of 11 cases, dilation of the upper bile duct was seen. In 6 cases, the intrahepatic bile duc t was dilated, and in 3 cases, a high degree of irregurality was observed on the intrahepatic bile duct wall. Judging from the appearance of the bile ducts, and the fact that a high degree of stenosis was observed in the cases with extensive portal vein occulusion, it is thought that stenosis of the extrahepatic bile ducts was caused by hepatopetal collaterals which developed into EHO, and we believe that this stenosis most likely results in complications of biliary duct diseases.
