Surgical resection has been considered to be the best treatment for early-stage hepatocellular carcinoma (HCC). However, radiofrequency ablation (RFA) has been reported to be more effective than other local ablation treatments and transarterial chemoembolization (TACE) in achieving complete tumor necrosis. Recently, combined chemoembolization and RFA may improve both overall and recurrence-free survival rates in patients with early stage HCC. RFA have not been applied in cases of that tumors were non-visualization on ultrasonography, and located near by large vessels, main bile ducts, and major extra-hepatic organs. we found that tumor, which was not shown on ultrasonography before TACE, can be visible for several days just after TACE. We report the clinical course and complete necrosis of tumor in two cases of small HCC by TACE and consecutive RFA within a few days.