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Overall survival (OS) for total cases treated with stereotactic body radiation therapy (SBRT) and repeated cases treated with SBRT. (a) OS for total cases (median survival time (MST), 52 months; 95% confidence interval (CI), 45–64 months). (b) OS for repeated cases. MST from first SBRT was 76 months (95% CI, 50–102 months).
