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Figure 2b. Hepatic vein thrombosis in a 68-year-old man with hepatocellular carcinoma in segment VIII. Follow-up CT scans obtained immediately after RF ablation (a and b at approximately the same level but with different rotation due to different degrees of inspiration) show a wedge-shaped area with decreased enhancement (arrowheads) in the hepatic arterial phase (a) and loss of enhancement in a tributary of the right hepatic vein (arrow) adjacent to the ablated lesion in the equilibrium phase (b).