Prognostic impact of the 8th edition of American Joint Committee on Cancer (AJCC) cancer staging system on clinically negative lymph nodes (cN0) breast cancer patients.

In 2017, the 8th edition of American Joint Committee on Cancer (AJCC) Staging Manual released the updating of TNM. The new edition introduces changes concerning tumor classification that could have a real innovative and useful clinical impact. The purpose of the study is to compare anatomic vs.