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- Title
Radiofrequency Ablation versus Stereotactic Body Radiation Therapy in the Treatment of Colorectal Cancer Liver Metastases.
- Authors
Jesang Yu; Dong Hwan Kim; Jungbok Lee; Yong Moon Shin; Jong Hoon Kim; Sang Min Yoon; Jinhong Jung; Jin Cheon Kim; Chang Sik Yu; Seok-Byung Lim; In Ja Park; Tae Won Kim; Yong Sang Hong; Sun Young Kim; Jeong Eun Kim; Jin-hong Park; So Yeon Kim
- Abstract
Purpose This study aimed to compare the treatment outcomes of radiofrequency ablation (RFA) and stereotactic body radiation therapy (SBRT) for colorectal cancer liver metastases (CRLM) and to determine the favorable treatment modality according to tumor characteristics. Materials and Methods We retrospectively analyzed the records of 222 colorectal cancer patients with 330 CRLM who underwent RFA (268 tumors in 178 patients) or SBRT (62 tumors in 44 patients) between 2007 and 2014. Kaplan-Meier method and Cox models were used by adjusting with inverse probability of treatment weighting (IPTW). Results The median follow-up duration was 30.5 months. The median tumor size was significantly smaller in the RFA group than in the SBRT group (1.5 cm vs 2.3 cm, p < 0.001). In IPTW-adjusted analysis, difference in treatment modality was not associated with significant differences in 1-year and 3-year recurrence-free survival (35% vs. 43%, 22% vs. 23%; p=0.198), overall survival (96% vs. 91%, 58% vs. 56%; p=0.508), and freedom from local progression (FFLP; 90% vs. 72%, 78% vs. 60%; p=0.106). Significant interaction effect between the treatment modality and tumor size was observed for FFLP (p=0.001). In IPTW-adjusted subgroup analysis of patients with tumor size > 2 cm, the SBRT group had a higher FFLP compared with the RFA group (hazard ratio, 0.153; p < 0.001). Conclusion SBRT and RFA showed similar local control in the treatment of patients with CRLM. Tumor size was an independent prognostic factor for local control and SBRT may be preferred for larger tumors.
- Subjects
COLORECTAL liver metastasis; STEREOTACTIC radiotherapy; CATHETER ablation; CANCER treatment; PROGNOSIS
- Publication
Cancer Research & Treatment, 2022, Vol 54, Issue 3, p850
- ISSN
1598-2998
- Publication type
Article
- DOI
10.4143/crt.2021.674