Figure 3.

Periductal-infiltrating cholangiocarcinoma in a 65-year-old female. (A) Ultrasound of the right upper quadrant shows subtle perihilar infiltration (arrow) and intrahepatic ductal dilatation (arrowheads); (B) transverse post-iodinated contrast CT in the portal venous phase shows perihilar infiltration (arrow) and perfusion changes (arrowheads) resulting from an occluded right portal vein; (C) coronal CT shows an occluded right portal vein (arrow) and moderate intrahepatic ductal dilatation (arrowheads).