Summary of the 8th Edition of the TNM Classification for Thoracic Cancers

The IASLC Staging and Prognostic Factors Committee (SPFC) proposed revisions to the lung cancer staging system for the 8th edition of the TNM Classification of Malignant Tumors. The Union for International Cancer Control (UICC) and the American Joint Committee on Cancer (AJCC) accepted these revisions, and the 8th edition of the TNM Classification was implemented in January 2017. In the United States, implementation was delayed until January 2018; now, the new edition has been enacted worldwide.