Hirokazu Watanabe

TL;DR: The methods used to evaluate the resultant Stage groupings and the proposals put forward for the 8th edition of the TNM Classification for lung cancer due to be published late 2016 are described.

TL;DR: To achieve uniformity and to promote future analyses of a planned prospective international database, the International Association for the Study of Lung Cancer proposes a new lymph node map which reconciles differences among currently used maps, and provides precise anatomic definitions for all lymph node stations.

TL;DR: Current N descriptors adequately predict the prognosis and therefore should be maintained in the forthcoming staging system, and it is recommended that physicians record the number of metastatic lymph nodes and to further classify the N category using new descriptors, such as N1a, N1b, N2a,N2b, and N3, for further testing.

TL;DR: Codes for the primary tumor categories of AIS and minimally invasive adenocarcinoma (MIA) and a uniform way to measure tumor size in part‐solid tumors for the eighth edition of the tumor, node, and metastasis classification of lung cancer are proposed.

TL;DR: An extensive analysis has produced stage classification proposals for lung cancer with a robust degree of discriminatory consistency and general applicability and external validation is encouraged to identify areas of strength and weakness.