[A successful case treated with S-1 and zoledronic acid for multiple bone metastasis of breast cancer].

The patient was a 55-year-old woman undergoing surgery for T2, N1, M0, stage II B breast cancer in November 1997. UFT and tamoxifen were administered as adjuvant chemotherapy. S-1 and zoledronic acid were then administered for the recurrence of multiple bone metastasis detected in January 2008. A significant improvement was achieved, and a long-term positive effect was confirmed until an exacerbation of bone metastasis in February 2010. S-1 and zoledronic acid therapy have few adverse drug reactions, they promptly manifest their effect, and are favored as a first choice for treating bone metastasis of breast cancer.