Extrahepatic disorders Biliary atresia sclerosing cholangitis Bile duct stenosis Choledochal cyst Choledochal-pancreaticoductal junction Anomaly Spontaneous perforation of the bile duct Mass(neoplasia, stone) Bile/mucous plugExtrahepatic disorders ◼ Biliary atresia ◼ sclerosing cholangitis ◼ Bile duct stenosis ◼ Choledochal cyst ◼ Choledochal-pancreaticoductal junction Anomaly ◼ Spontaneous perforation of the bile duct ◼ Mass (neoplasia, stone) ◼ Bile/mucous plug