Survival of women with metastatic breast cancer at Yale from 1920 to 1980.

The tumor registry at Yale--New Haven Hospital, which began recording data in 1920, was utilized to examine the ultimate outcome of all breast cancer patients who were initially diagnosed at Yale with metastatic breast cancer. Of the 5,898 patients with breast cancer seen from 1920 to 1980, 574 initially had metastatic cancer. The median survival of these patients increased steadily from 21 months in 1920 to 41 months in the decade from 1970 to 1980. The percentage of women actually surviving 5 years increased from 5% in the 1920s to approximately 25% in the 1960s. Despite the use of combination drug programs in the 1970s, the percentage of these patients remaining alive at 5 years remained near 25%. Firm conclusions cannot be made from a retrospective study spanning 60 years, although the trends depicted and lack of continued improvement indicate that our current therapeutic approach to metastatic breast cancer may not result in dramatic improvement in overall survival.