The document summarizes a study comparing lumpectomy/radiation therapy to mastectomy in the treatment of breast cancer. The study found that disease-free and overall survival rates were equivalent between the two treatments at 10 years follow up. For women who had a local recurrence after lumpectomy/radiation, salvage mastectomy was often effective with a 67% disease-free survival rate. Factors like tumor stage and lymph node involvement were better predictors of cancer recurrence than the type of local therapy. The study demonstrates that lumpectomy/radiation is as effective as mastectomy for breast cancer treatment while preserving the breast.