Prognostic significance of the extent of lymph node involvement in stage II-N1 non-small cell lung cancer.

BACKGROUND The non-small cell lung cancer (NSCLC) staging system (published in 2009 in the seventh edition of the cancer staging manuals of the Union for International Cancer Control and American Joint Commission on Cancer) did not include any changes to current N descriptors for NSCLC. However, the prognostic significance of the extent of lymph node (LN… (More)