The increase in the number of women undergoing mammography annually allows for the diagnosis in the early stages. It is estimated that in 2020, 25% of the breast tumors diagnosed in Brazil are smaller than 2 cm. Breast cancer is divided into three groups, which will guide behaviors and prognosis: early, locally advanced, and metastatic breast cancer. According to the American Joint Committee on Cancer (AJCC), locally advanced carcinoma comprises stages IIIA, IIIB, and IIIC, i.e., tumors with extensive lymph node involvement (N2 and N3) or chest wall invasion (T4a), skin (T4b), or both.
KeywordsEarly breast cancer Breast-conserving surgery Mastectomy Sentinel node biopsy Systemic treatment Radiation therapy
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