WS04.03 How to Adjust Pathology Evaluation According to IASLC Database

Abstract

How to Adjust Pathology Evaluation According to IASLC Database In 2016 the 8th edition of the TNM by the International Association for the Study of Lung Cancer (IASLC) refined the definition of early-stage lung cancer by further subdividing the T1 and T2 descriptors according to 1 cm size cut-offs. In addition, in nonmucinous adenocarcinoma (AC) with a lepidic component only the size of the invasive component defines the T descriptor rather than the total size of the lesion. These modifications not only led to a better prognostication of surgical adenocarcinoma patients, but they also emphasize the importance to accurately assess (grossly and microscopically) and report the histological patterns of adenocarcinoma. In addition, although the number of metastatic lymph nodes was not integrated in the N descriptor, its relevance has been demonstrated and will be addressed in the upcoming edition. The purpose of this presentation is to review the key elements of a pathology report when evaluating a pulmonary carcinoma, and to discuss the challenges encountered in pathology for the development of the upcoming edition of the TNM. Pathology, TNM, Report