Breast cancer is the most common malignant disease in women and represents a worldwide problem. The women are protected by prevention, treatment of primary tumors, resuscitation and generalization of the disease.therefore, it is very significant to evaluate the prognosis on the basis of biological characteristics of the tumour and to determine the right individual therapy in each patient.
Our aim was to determine a group of patients with malignant breast disease based on biological characteristics of the tumour who can be treated without axillary exenteration even with a metastasis in the sentinel lymph node, thereby reducing the morbidity associated with this surgery, without worsening the prognosis.