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Fig. 1C. —75-year-old man with percutaneous radiofrequency ablation of recurrent hepatocellular carcinoma. He had undergone hepaticojejunostomy due to biliary stricture after left hepatectomy for hepatocellular carcinoma. Contrast-enhanced CT scan obtained immediately after sonographic examination shows low-attenuating ablation zone (arrows) containing substantial amount of air (arrowheads), which indicates liver abscess. Cultures with blood were positive for Enterococcus species, which are enteric bacteria. Sepsis developed in this patient, but he recovered with parenteral antibiotics.