Abstract
Background
This study critically evaluated the local and overall treatment failure rates after percutaneous radiofrequency ablation (RFA) of pulmonary metastases from colorectal carcinoma.
Methods
Fifty-five nonsurgical candidates underwent RFA of colorectal pulmonary metastases. The primary end points of this study were local progression-free survival (PFS) and overall PFS. Univariate and multivariate analyses were performed to identify significant prognostic parameters for local and overall PFS.
Results
The local recurrence rate was 38%. For local PFS, univariate analysis demonstrated that the largest size of lung metastasis, the location of lung metastases, the post-RFA carcinoembryonic antigen level at 1 month, and the post-RFA carcinoembryonic antigen level at 3 months were significant prognostic indicators. In multivariate analysis, a largest size of lung metastasis of >3 cm and a post-RFA carcinoembryonic antigen level of >5 ng/mL at 1 month were independently associated with a reduced local PFS. The overall recurrence rate was 66%. For overall PFS, univariate analysis demonstrated that sex and the largest size of lung metastasis were significant prognostic indicators. In multivariate analysis, a largest size of lung metastasis of >3 cm was independently associated with a reduced overall PFS.
Conclusions
RFA of colorectal pulmonary metastases may have a useful role in local disease control for nonsurgical candidates, but its efficacy in patients with a lung metastasis of >3 cm is limited.
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Acknowledgments
The authors thank David Chang for his expertise in statistical analysis and Jing Zhao for maintaining the RFA database.
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Yan, T.D., King, J., Sjarif, A. et al. Treatment Failure After Percutaneous Radiofrequency Ablation for Nonsurgical Candidates With Pulmonary Metastases From Colorectal Carcinoma. Ann Surg Oncol 14, 1718–1726 (2007). https://doi.org/10.1245/s10434-006-9271-x
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DOI: https://doi.org/10.1245/s10434-006-9271-x