Comparison of Radiofrequency Ablation Versus Cryoablation For T1 Renal Tumors: An Evidence-Based Analysis of Comparative Outcomes

Hongjin Shi; Jinze Li; Zhinan Fan; Jing Yang; Shi Fu; Haifeng Wang; Jiansong Wang; Jinsong Zhang

doi:10.3389/fonc.2022.802437

Comparison of Radiofrequency Ablation Versus Cryoablation For T1 Renal Tumors: An Evidence-Based Analysis of Comparative Outcomes

Front Oncol. 2022 Apr 22:12:802437. doi: 10.3389/fonc.2022.802437. eCollection 2022.

Authors

Hongjin Shi¹, Jinze Li², Zhinan Fan¹, Jing Yang¹, Shi Fu¹, Haifeng Wang¹, Jiansong Wang¹, Jinsong Zhang¹

Affiliations

¹ Department of Urology, The Second Affiliated Hospital, Kunming Medical University, Kunming, China.
² Department of Urology/Institute of Urology, West China Hospital, Sichuan University, Chengdu, China.

Abstract

Objective: To discuss the differences in the effectiveness and security for T1 renal tumors by radiofrequency ablation (RFA) and cryoablation (CA).

Methods: We systematically searched the Cochrane Library, PubMed, Embase, CNKI databases, and Science databases, and the date was from the above database establishment to August 2021. Controlled trials on RFA and CA for T1 renal tumors were included. The meta-analysis was conducted with the Review Manager 5.4 software.

Results: A total of ten studies with 2,367 patients were included in the analysis. There were no significant differences in complications (odds ratio [OR], 1.23; 95% CI, 0.80 to 1.90; p=0.35), primary technique efficacy rate (OR, 1.01; 95% CI, 0.33 to 3.14; p=0.98), changes in serum creatinine (weighted mean difference [WMD], 0.53; 95% CI, -0.50 to 1.57; p=0.31), or 5-year survival rate (hazard ratio [HR], 1.11; 95% CI, 0.41 to 3.00; p=0.84) among patients undergoing RFA and CA. However, compared with patients who underwent RFA, patients who underwent CA had a lower Local recurrence (OR: 2.25; 95% CI: 1.38 to 3.67; p = 0.001).

Conclusion: The analysis demonstrated that in the treatment of T1 renal tumors, CA may be associated with lower local recurrence rates. However, no differences were observed in terms of primary technique efficacy rate, 5-year survival rate, changes in serum creatinine, and complication rate between groups.

Systematic review registration: [https://www.crd.york.ac.uk/PROSPERO/], identifier PROSPERO (CRD42021295160).

Keywords: cryoablation; meta-analysis; outcomes; radiofrequency ablation; renal tumor.