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  • Title: Liver resection versus microwave ablation for hepatocellular carcinoma in ideal candidates for ablation per Barcelona Clinic Liver Cancer staging: a propensity score matching and inverse probability of treatment weighting analysis.
    Author: Tong Y, Cai R, Li JX, Chang DH, Wang LZ, Cai WW, Xiao YD.
    Journal: Aliment Pharmacol Ther; 2022 Dec; 56(11-12):1602-1614. PubMed ID: 36285593.
    Abstract:
    BACKGROUND: Liver resection (LRE) and microwave ablation (MWA) for hepatocellular carcinoma (HCC) have been widely compared. AIMS: To compare the therapeutic outcomes of percutaneous MWA and LRE for HCC in ideal candidates for ablation according to Barcelona Clinic Liver Cancer (BCLC) staging METHODS: Between August 2013 and November 2020, 483 consecutive patients meeting criteria for "ideal candidates for ablation" per the BCLC staging initially treated with MWA (n = 168) or LRE (n = 315) were included. Patients were further divided into BCLC-0 (n = 116) and BCLC-A (n = 367) groups. Overall survival (OS), recurrence-free survival (RFS) and post-procedure-related complication rates were compared before and after propensity score matching (PSM) and inverse probability of treatment weighting (IPTW) in the overall population and subgroups. Multivariate Cox regression analysis was performed to determine whether the treatment modality was an independent prognostic factor. RESULTS: LRE had a better RFS and similar OS and post-procedure-related complication rates compared to MWA in the overall population and in the BCLC-A subgroup both before and after PSM and IPTW. However, the OS, RFS and post-procedure-related complication rates were equivalent between the two groups before and after PSM and IPTW in patients with BCLC-0 disease. The multivariate Cox regression analysis showed that LRE was associated with better RFS over MWA in overall population (p = 0.003; HR = 0.67; 95% CI: 0.51-0.87) and BCLC-A disease (p = 0.046; HR = 0.74; 95% CI: 0.56-0.99), while it did not differ in OS. CONCLUSION: An 'ideal candidate for ablation' according to the BCLC staging system may not be an ideal candidate for MWA. However, patients with BCLC-0 may be the optimal population for MWA.
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