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Figure 9c. Perforation of the colon in a 70-year-old man with hepatocellular carcinoma in segment VI. (a) CT scan, obtained 2 days after RF ablation, shows scattered air bubbles (arrow) and fat stranding (arrowheads). (b) Follow-up CT scan, obtained 2 weeks after RF ablation, shows an abscess (arrowheads) in the ablated area, and, between the colon and the abscess, a fistula (arrow) that developed despite management with fasting and antibiotic therapy. (c) CT scan, obtained 5 months after endoscopic aspiration and closure of the fistula, shows the absence of the abscess (arrow).
