Transarterial Chemoembolization with Radiofrequency Ablation versus Surgical Resection for Small Late-Recurrence Hepatocellular Carcinoma.

Background Radiofrequency ablation (RFA) has comparable clinical outcomes to surgical resection (SR) for treating small recurrent hepatocellular carcinoma (HCC). However, whether combined transarterial chemoembolization (TACE) with RFA (hereafter, TACE-RFA) outperforms SR for treating small late-recurrence HCCs remains unknown. Purpose To compare the clinical outcome of TACE-RFA with that of SR in patients with small late-recurrence HCCs. Materials and Methods This randomized clinical trial recruited patients between July 2013 and March 2019. Patients with small late-recurrence HCCs (a single recurrent HCC nodule [≤ 5 cm in diameter] or three or fewer nodules [each ≤ 3 cm in diameter] and recurrence at least 12 months after radical therapy of primary HCC) were randomly assigned to receive TACE-RFA or SR. The primary end point was overall survival (OS). The secondary end points included recurrence-free survival (RFS) and the incidence of complications. OS and RFS were assessed using the Kaplan-Meier method and log-rank test. Results In the intention-to-treat analysis, 210 patients (mean age, 52 years ± 12 [SD]; 194 male) were included, with 105 patients in each group. The 1-, 3-, and 5-year OS rates were 99%, 81%, and 69%, respectively, in the TACE-RFA group and 96%, 81%, and 76%, respectively, in the SR group (hazard ratio [HR], 1.34; 95% CI: 0.81, 2.23; = .26). The 1-, 3-, and 5-year RFS rates were 71%, 38%, and 24%, respectively, in the TACE-RFA group and 73%, 43%, and 29%, respectively, in the SR group (HR, 1.05; 95% CI: 0.76, 1.45; = .78). The incidence of complications was greater in the SR group than in the TACE-RFA group (41% [43 of 104] vs 24% [23 of 96]; = .01). Conclusion For patients with small late-recurrence HCCs, TACE-RFA did not yield better survival outcomes than SR. However, the incidence of complications was lower in patients who received TACE-RFA therapy. ClinicalTrials.gov Identifier: NCT01833286 © RSNA, 2025 See also the editorial by Ronot in this issue.