Abstract
Purpose
This retrospective, single-center study evaluated radiofrequency (RF) ablation for pulmonary metastases of sarcoma.
Materials and methods
Forty-six patients with sarcoma (144 pulmonary metastases) underwent 88 RF ablation sessions. Data regarding local tumor progression, efficacy, procedural adverse events (AEs; National Cancer Institute Common Terminology Criteria for Adverse Events, version 4.0), overall survival (OS), and OS-associated prognostic factors were retrospectively evaluated using univariate analyses.
Results
Local progression occurred in 22 of 144 tumors (15.3%). Primary and secondary efficacy rates were 83.5 and 90.0% at 1 year and 76.3 and 81.4% at 2 years, respectively. Seventy-three grade 1 AEs, 33 grade 2 AEs, and no grade ≥ 3 AEs were observed. Twenty-eight patients (60.9%) remained alive and 18 died, yielding 1-, 2-, and 3-year OS rates of 80.6, 70.1, and 47.1% (median survival time, 31.7 months). Univariate analysis revealed extrapulmonary metastasis (P = 0.005), noncurative RF ablation (P = 0.009), and a post-RF ablation disease-free interval of ≤12 months (P = 0.015) as significant negative prognostic factors.
Conclusion
RF ablation is safe, offers good local control, and may be a viable treatment option for pulmonary metastasis of sarcoma.
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The authors declare no conflicts of interest or funding sources to disclose. The ethics committee at our institutional approved this retrospective study.
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Sato, T., Iguchi, T., Hiraki, T. et al. Radiofrequency ablation of pulmonary metastases from sarcoma: single-center retrospective evaluation of 46 patients. Jpn J Radiol 35, 61–67 (2017). https://doi.org/10.1007/s11604-016-0601-z
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DOI: https://doi.org/10.1007/s11604-016-0601-z