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Survival curves of OS based on lesion size. The estimated median OS of patients with lesion diameters >3 cm was 18.7 months (95% CI: 12.2, 21.3 months), and that of patients ≤3 cm was 32.7 months (95% CI: 25.7, 42.7 months). Multivariate analysis revealed that lesion diameters >3 cm were independent predictors after adjusting for potential confounders (P = 0.011, HR: 2.112, 95% CI: 1.188, 3.754). OS = overall survival; CI = confidence interval; HR = hazard ratio.
