This paper (“A case of rapid progression of hepatocellular carcinoma after radiofrequency ablation” by Lee K, et al from Journal of Liver Cancer 2015;15(2):118-121) has been retracted because of the several figures (Fig. 1A, Fig. 3A, and Fig. 4) of the paper1 were identical to those of the previous published original article2 without agreement of the copyright holder. The authors informed that they will take full responsibility for this unintended duplicate publication of figures caused by lack of communication, and wish to apologize to readers of the journal for any convenience. To preserve scientific integrity, Journal of Liver Cancer agreed with the authors that this paper be retracted.