Evaluation of the scientific results of the study entitled "Opportunities for surgical treatment of patients with stage IV breast cancer" performed by Russian Society of Oncomammologists (RSOM)
In 11.5 % of breast cancer patients distant metastases are detected at diagnosis. The results of treatment of 608 patients of 5 Russian oncological centers are presented. Removal of the primary tumor in case of newly diagnosed advanced breast cancer increases the mean duration of life from 23 up to 35 months (p < 0.01). Three-year overall survival increases from 47 to 65 % and 5-year survival – from 21 to 45 % (p = 0.001). The most impressive effect of surgical treatment is observed in patients with bone metastases, 1–2 metastatic lesions in one anatomical region, with positive effect after systemic treatment, high expression estrogen/progesterone receptors, possibility of attaining free surgical margins.