Diffusion-weighted imaging of biliopancreatic disorders: Correlation with conventional magnetic resonance imaging

Figure 14 Hepatocellular carcinoma with tumor thrombus in bile duct in a 62-year-old man. A: Gadoxetic acid-enhanced T1-weighted image obtained during the arterial phase shows a hypervascular HCC in the right lobe of the liver (arrowhead) and an intraluminal enhancing mass (arrow) in the common hepatic duct; B: On gadoxetic-acid-enhanced T1-weighted image obtained 20 min after injection, a small HCC (arrowhead) is hypointense relative to the surrounding liver. Contrast material filling the left intrahepatic duct is delayed owing to a partial bile duct obstruction caused by tumor thrombus in the bile duct (arrow); C: DWI at b = 800 s/mm² shows a hyperintense small HCC (arrowhead) and tumor thrombus in the bile duct (arrow). HCC: Hepatocellular carcinoma.