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US of the liver in a 2-month-old boy with giant cell hepatitis and cholestasis. US shows intrahepatic biliary dilatation (arrowheads in a), dilatation of the common bile duct (arrowheads in b) and an obstructive echogenic focus in the distal common bile duct at the level of the papilla of Vater (arrow in b), suspicious for an obstructive gallstone
