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Figure 3b. Hepatic infarction in a 55-year-old woman with hepatocellular carcinoma in segment III. (a) Follow-up CT scan, obtained immediately after RF ablation, shows a well-defined wedge-shaped infarcted area with low attenuation (arrowheads), as well as branching areas with attenuation similar to that of air (arrow), considered to be tributaries of the portal vein. (b) Follow-up CT scan (obtained 3 cm caudad to a) shows that the area of low attenuation (arrows) extends to the liver surface.
