Comparison of stereotactic body radiation therapy with hepatic resection and radiofrequency ablation as initial treatment in patients with early-stage hepatocellular carcinoma.

Background: Stereotactic body radiation therapy (SBRT) has emerged as a novel intervention for early-stage hepatocellular carcinoma (HCC). The outcomes of SBRT, liver resection (LR), and radiofrequency ablation (RFA) as the initial treatment for AJCC stage I HCC patients remain unclear. Methods: Patients with AJCC stage I HCC from the Surveillance, Epidemiology and End Results database were analyzed for survival rates using the Kaplan-Meier method and stratified according to tumor size: S subgroup (≤2 cm), M subgroup (>2-3 cm), and L subgroup (>3 cm). For factors including age, year of diagnosis, sex, race, grade, tumor size, AFP, and fibrosis score, propensity score matching was performed to eliminate the imbalance of baseline features and selection bias during groups. Results: A total of 4,002 patients were included; the difference in median overall survival (mOS) between the SBRT group and the LR or RFA group in the S subgroup was statistically insignificant ( Conclusion: For HCC ≤ 2 cm, SBRT can be used as an alternative treatment for RFA. For patients with HCC larger than 2 cm, RFA can provide better long-term survival than SBRT, while LR remains the best choice.