Fig. 4

Kaplan–Meier survival curve of TKI treatments with versus without lung cancer surgery in stages IIIB and IV lung adenocarcinoma. Lung adenocarcinoma patients with TKI treatment and lung cancer surgery got a statistically significant better survival (p = 0.002) than TKI treatment without operation by propensity score matching. The median overall survival was still not met, and the average overall survival was 51.5 months