Figure 3From: Elevation of circulating big endothelin-1: an independent prognostic factor for tumor recurrence and survival in patients with esophageal squamous cell carcinoma Kaplan-Meier survival curve in relation to preoperative plasma big ET-1 levels in patients with ESCC. The disease-free survival of patients with elevated big ET-1 levels was significantly lower than that of patients with normal levels(log-rank test P < 0.001).Back to article page