Upfront Targeted Axillary Dissection for Luminal Breast Cancer With Limited Axillary Involvement

Inclusion Criteria: * Diagnosis of T0-T1-T2 ER+/PR+ HER2- breast cancer with limited nodal involvement (1 or 2 suspicious lymph node on US, with at least 1 nodal positive cytology/histology) * M0 * Conservative surgery or mastectomy * Neoadjuvant treatment not recommended after a multidisciplinary discussion * Patients between 18 and 90 years old * Patients willing and able to follow the study procedures and available for follow-up over the entire duration of the study Exclusion Criteria: * Psychiatric, addictive or any disorder, which compromises ability to give informed consent for participation in the study * Personal history of invasive breast cancer * Other invasive malignancies diagnosed in the last five years * Any condition that may expose the individual to a higher risk or preclude the study from achieving full compliance or completion * Contraindications to radiation therapy