[Two cases of advanced breast cancer effectively treated with chemoendocrine therapy and radiotherapy].

We reported 2 cases of breast cancer with lymph node metastasis treated with CAF (cyclophosphamide, adriamycin, 5-fluorouracil) and medroxyprogesterone acetate (MPA). Case 1 was stage IV [T4b, N3 M1 (lung)] and case 2 was stage IIIa (T1, N2, M0). The two cases responded well to CAF and MPA therapy in local and systemic lesions, and then underwent radiotherapy and lymph node resection without mastectomy. After these treatments, both cases were thought to be disease-free. Major side effects were allopecia, obesity, and leukopenia. These results suggest that combination chemoendotherapy, radiotherapy, and surgery can be utilized for most patients with moderately advanced breast cancer.