Fig. 4From: Surgery for stage IIB–IIIB small cell lung cancerKaplan–Meier curves of OS for stage T3–4N0M0/T1–4N1–2M0 SCLC for sublobectomy vs. no surgery before PSM (A) and after PSM (B), lobectomy vs. no surgery before PSM (C) and after PSM (D), and pneumonectomy vs. no surgery before PSM (E) and after PSM (F). OS, overall survival; SCLC, small cell lung cancer, PSM, propensity score matchingBack to article page