Has lobe-specific nodal dissection for early-stage non-small lung cancer already become standard treatment?

In 1960, Cahan reported the first patients to successfully undergo lobectomy with regional lymph node dissection, which was called radical lobectomy (1). Since then, this procedure has been broadly accepted and has remained as a standard surgery for non-small cell lung cancer (NSCLC). Systematic nodal dissection (SND) has been reported to be important for survival as well as accurate disease staging (2,3). However, the effect of SND on the prognosis remains controversial.