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Fig. 1B. 52-year-old man with successful radiofrequency ablation of
hepatocellular carcinoma abutting colon. Oblique sonogram obtained during
radiofrequency ablation shows slightly hypoechoic hepatocellular carcinoma
(arrows) that abuts colon (C). Note 3-cm active tip (between
electronic calipers) of internally cooled electrode running parallel to
anterior hepatic angle. Single ablation was performed for 12 min.