Fig. 3From: Association between radiotherapy and risk of second primary malignancies in patients with resectable lung cancer: a population-based studyThe comparisons of cumulative incidence of second primary solid cancer (A), gastrointestinal cancer (B), esophageal cancer (C) and stomach cancer (D) between subgroups stratified by radiotherapy use. The Fine-Gray test determined the P values. RT, radiotherapy; NRT, no radiotherapyBack to article page