Fig. 2From: Elective nodal irradiation versus involved-field irradiation for stage II–IV cervical esophageal squamous cell carcinoma patients undergoing definitive concurrent chemoradiotherapy: a retrospective propensity study with 8-year survival outcomesOverall survival for patients in ENI versus IFI group before propensity score-matched analysis (A) and after propensity score-matched analysis (B). (ENI: elective nodal irradiation; IFI: involved-field irradiation)Back to article page