Fig. 2

Kaplan–Meier survival curves of patients with lung adenocarcinomas with a high-grade fetal adenocarcinoma component. Overall survival (a) and disease-specific survival (b) curves of adenocarcinomas with the fetal-type component for each stage. Overall survival curves of adenocarcinomas with the fetal-type component separated by the proportion of fetal-type component (c) and presence/absence of solid and/or micropapillary components (d)