borderline significantp = 0.060
In terms of tumor recurrence, urivariate analyses demonstrated that tumor stage is significantly associated with RFS [HR, 1.91; 95% confidence interval (CI), 1.18-3.07; p = 0.008], and tumor grade is a borderline significant predictor (HR, 2.12; 95% CI, 0.97-4.64; p = 0.060).