Fig. 1From: Prognostic significance of lung radiation dose in patients with esophageal cancer treated with neoadjuvant chemoradiotherapyKaplan-Meier curve demonstrating overall survival and progression-free survival according to a all patients, b lung V20, and c lung V5 groups. Vx was defined as the percentage of the total organ volume receiving a radiation dose of x (Gy) or moreBack to article page