This retrospective study analyzes overall survival and relapse-free survival after mastectomy and survival after recurrence of 302 patients with metastatic breast cancer. In the whole group the median survival after mastectomy is 99 months: 5-year survival rate is 68.4% and 10-year survival rate is 38.5%. The median survival from relapse was 36 months: 5-year and 10-year survival rates were respectively 26.8 and 18.9%. Various subsets of patients divided according to several prognostic factors have been analyzed.