Testing Whether Treating Breast Cancer Metastases With Surgery or High-Dose Radiation Improves Survival

PRIMARY OBJECTIVES: I. Phase II: To determine whether ablation \[through stereotactic body radiation therapy (SBRT) (stereotactic radiosurgery) and/or surgical resection of all known metastases\] in oligometastatic breast cancer patients provides a sufficient signal for improved progression-free survival (PFS) to warrant full accrual to the Phase III portion of the trial. II. Phase III: To determine whether ablation (through SBRT and/or surgical resection of all known metastases) in oligometastatic breast cancer patients significantly improves overall survival (OS). SECONDARY OBJECTIVES: I. To evaluate treated metastasis control according to tumor receptor status \[estrogen receptor (ER), progesterone receptor (PR), human epidermal growth factor receptor 2 (HER2)\], use of chemotherapy, surgery versus (vs.) ablative therapy, and number of metastases. II. To evaluate whether the addition of ablative metastasis directed therapy significantly reduces the number of distant recurrences (new metastases) in patients who progress according to tumor receptor status (ER, PR, HER-2); use of chemotherapy, and number of metastases. III. To evaluate adverse events in patients who receive ablative metastasis-directed therapy to all known metastases in addition to standard medical therapy compared with those treated with standard medical therapy alone. EXPLORATORY OBJECTIVE: I. To explore the most appropriate and clinically relevant technological parameters to ensure quality and effectiveness throughout the radiation therapy processes, including imaging, simulation, target and critical structure definition, treatment planning, image guidance, and delivery. TRANSLATIONAL RESEARCH OBJECTIVES: I. To determine whether \< 5 circulating tumor cells (CTCs) (per 7.5 ml of blood) is an independent prognostic (outcome) marker for improved PFS and OS in oligometastatic breast cancer. II. To determine whether \< 5 CTCs (per 7.5 ml of blood) is an independent predictive (response to therapy) marker for improved PFS and OS in oligometastatic breast cancer. III. To determine whether eliminating CTCs (0/7.5 ml of blood in patients with at least 2 CTCs at registration) is both a prognostic and predictive marker for improved PFS and OS. IV. To evaluate the prognostic and predictive properties of CTC count as a continuous measure of PFS and OS. V. To store material for retrospective analysis of circulating tumor deoxyribonucleic acid (ctDNA). VI. To store material for retrospective analysis of circulating micro-ribonucleic acid (RNA).