SURVIVAL OF PATIENTS WITH METASTATIC BREAST-CANCER DIAGNOSED BETWEEN 1955 AND 1980

In order to determine whether current programs for the management of metastatic breast cancer have led to improved patient survival, we determined the median survival times for five-year intervals of 849 patients admitted to the City of Hope National Medical Center with metastatic breast cancer from 1955 to 1980. Survival curves were constructed from the dates of first diagnosis of breast cancer and to the first metastasis for all population subsets and clinical subsets: menopausal status, presence or absence of visceral metastases, length of disease-free interval, and pattern of palliative therapy. In this analysis, the median survival in each successive interval of five years from diagnosis of the primary tumor was 52.1, 45.0, 49.9, 41.1, and 36.0 months, and the survival times from the first metastasis were 31.9, 23.0, 24.2, 23.9, and 18.7 months. Survival times in each of the clinical subsets remained unchanged during the period of observation, regardless of the therapeutic modalities included in the treatment regimens. This study indicates that changes in palliative therapy for metastatic breast cancer during the 25 years of observation have not influenced overall survival. Therefore, it seems appropriate that the therapeutic risk/benefit ratio and impact on quality of life should be reassessed when asymptomatic patients are treated, or when aggressive palliative therapy is used outside a clinical research setting.