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

Figure 13 Hilar cholangiocarcinoma (intraductal-growing type) in a 67-year-old man. A: Contrast-enhanced CT shows mild intrahepatic duct dilatation. However, intraductal masses are not clearly depicted on CT; B: Fusion image of T2-weighted and diffusion-weighted images at b = 800 s/mm² shows high signal intensity (arrowhead) at the first branch of the intrahepatic duct; C: Photograph of the gross specimen shows intraductal growing masses (arrowheads) in the bile duct. Histological analysis revealed biliary intraepithelial neoplasia with high grade dysplasia. CT: Computed tomography.