A prospective analysis of the management practices for patients with Stage-III-N2Non-Small-Cell lung cancer (OBSERVE IIIA-B GFPC 04-2020Study).

Background: Management of stage-III-N2 non-small-cell lung cancer (NSCLC) based on a multimodal strategy (surgery or radiotherapycombined with systemic drugs) remains controversial. Patients are treated with a curative intent, and available data suggestprolonged survival after complete resection. However, no consensual definition of "tumor resectability" exists.