Influence of pleural invasion on survival in pathologic T3–4N0M0 non-small cell lung cancer: a propensity score matching study based on the Surveillance, Epidemiology, and End Results database

Pleural invasion (PI) is considered to be an adverse prognostic factor in non-small cell lung cancer (NSCLC). However, the prognostic roles of PI in pathologic (p)T3-4N0M0 NSCLC remain controversial. Therefore, this study aimed to evaluate the predictive value of PI in patients with pT3-4N0M0 NSCLC.