Figure 2From: Is maximum primary tumor diameter still a prognostic factor in patients with nasopharyngeal carcinoma treated using intensity-modulated radiotherapy?Survival rates of 566 patients with NPC stratified by maximum primary tumor Diameter. A. overall survival. B. failure-free survival. C. distant metastasis-free survival. D. local relapse-free survival. Abbreviations: 95% CI, 95% confidence interval; HR, hazard ratio; No at risk, number at risk.Back to article page