fig3

Figure 3. Contrast enhanced CT: 70 year-old male with chronic hepatitis B. A 120-mm mass in the right liver lobe exhibits a targetoid appearance in the arterial phase with central progressive enhancement in the portal venous and delayed phases, indicating a LR-M observation. There are also features of tumor in vein (arrows), shown as portal vein expansion with heterogeneous contrast enhancement. Biopsy results indicated a cholangiocarcinoma