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. 2019 Jul 16;19:699. doi: 10.1186/s12885-019-5881-0

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© The Author(s). 2019

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 2 — Images of a patient with recurrent hepatocellular carcinoma (HCC) in the caudate lobe treated by percutaneous radiofrequency ablation (RFA). a transverse contrast-enhanced computer tomography (CT) before treatment shows the tumor in the caudate lobe (arrow); b tumor appears completely hyperechoic after the beginning of RFA, and the electrode (arrowhead) is clearly showed on the ultrasound image; c CEUS image obtained 1 month after RFA shows the tumor completely ablated; d contrast-enhanced CT image obtained 1 month after RFA shows the tumor completely ablated