Therapeutic outcomes of thermal ablation versus repeated hepatic resection for recurrent hepatocellular carcinoma by using propensity score analysis: a multicenter real-world study.

Background: The therapeutic value of thermal ablation (TA) versus repeat hepatic resection (RHR) for recurrent hepatocellular carcinoma (rHCC) after initial hepatic resection is uncertain. This study aimed to investigate the prognosis of TA and RHR.

Materials And Methods: In this multicenter real-world retrospective study, 473 patients were enrolled between January 2015 and August 2023, with 340 in the TA group and 133 in the RHR group. Propensity score matching (PSM) and inverse probability of treatment weighting (IPTW) were employed to reduce selection bias. Local tumor progression (LTP), recurrence-free survival (RFS), and post-recurrence survival (PRS) were compared before and after PSM and IPTW.

Results: A total of 473 patients (231 aged ≥ 60 years; 393 men) were evaluated. LTP, RFS, and PRS rates did not differ significantly between groups before (P = 0.940, P = 0.180, and P = 0.700) and after matching (P = 0.420, P = 0.680, and P = 0.810) and weighting (P = 0.940, P = 0.180, and P = 0.700). Multivariable Cox analysis identified tumor number (HR: 2.28; P < 0.001) and PLT (HR: 0.73; P = 0.038) as independent prognostic factors for RFS in the entire rHCC cohort. And tumor location, size, number, ascites, AST, and AFP (HR: 0.55-2.18; P = 0.004-0.046) were independent prognostic factors for PRS. Subgroup analysis showed both TA and RHR were effective treatments for rHCC, regardless of tumor size, number, subcapsular, or perivascular lesions.

Conclusions: The cumulative LTP, RFS, and PRS were not significantly different between TA and RHR for rHCC within the Milan criteria. TA may be a viable curative option for early-stage rHCC patients.