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CHARACTERISTIC INTRADUCTAL ULTRASONOGRAPHIC FEATURES OF PORTAL BILIOPATHY

The term ‘portal biliopathy’ is used to describe cholangiographic abnormalities seen in patients with extrahepatic portal vein obstruction. Portal biliopathy is mainly composed of extrinsic compression of the bile duct caused by enlarged venous collaterals. Herein we report a case of asymptomatic portal biliopathy caused by idiopathic extrahepatic portal vein obstruction. In the present case, intraductal ultrasonography showed normal anatomic layers of the distal common bile duct wall, surrounded by numerous tubular structures which were suspected to be collateral vessels. We suggest that intraductal ultrasonography may be a helpful imaging procedure for detection of this pathological condition.