Abstract
Purpose
To evaluate efficacy and safety of radiofrequency ablation (RFA) and microwave ablation (MWA) in unresectable lung malignancies.
Methods
Data regarding patients with primary and secondary lung tumors treated with RFA or MWA from 2008 to 2020 were reviewed retrospectively.
Primary study objectives such as technical success, primary and secondary technique efficacy rates, local tumor progression (LTP) rate, LPT-free survival (LPTFS) and overall survival (OS) were assessed. Secondary study objectives were side effects and complications. RFA and MWA were compared using the Chi-square test for continuous variables. Kaplan–Meier curves were calculated for survival statistical analysis.
Results
A total of 113 patients with primary or secondary lung tumor underwent 74 RFA (48%) and 81 MWA (52%). Technical success rate was 151/155 (97%); primary and secondary technique efficacy rates were 123/155 (79%) and 129/155 (83%), respectively. During the entire study follow-up, 32 cases experienced disease progression (20%), of which 18 underwent repeat ablation (12%), in 6 cases with success (4%). Residual unablated tumor happened in 4/155 cases (3%). LTP occurred in 28/155 cases (17%). The only factor associated with poorer LTP-FS was lesion diameter ≥ 30 mm (P < 0.05). One-, 3- and 5-years LTP-FS was 83%, 82%, 82%, respectively. One-, 3- and 5-years OS of the entire population was 87%, 74%, 73%, respectively. Minor and major complication rates were 53/155 (34%) and 29/155 (19%), respectively.
Conclusions
In conclusion, this study confirms the appropriateness of RFA and MWA for lung tumors treatment, in terms of safety and efficacy.
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Grasso, R.F., Bernetti, C., Pacella, G. et al. A comparative analysis of thermal ablation techniques in the treatment of primary and secondary lung tumors: a single-center experience. Radiol med 127, 714–724 (2022). https://doi.org/10.1007/s11547-022-01508-2
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DOI: https://doi.org/10.1007/s11547-022-01508-2