Fig. 3From: Impact of preoperative biopsy on tumor spread through air spaces in stage I non-small cell lung cancer: a propensity score-matched studyKaplan–Meier curves of RFS (upper panels) and OS (lower panels) for three groups before PSM (A), PNB group versus non-biopsy group after PSM (B), and BB group versus non-biopsy group after PSM (C)Back to article page