Standard or Comprehensive Radiation Therapy in Treating Patients With Early-Stage Breast Cancer Previously Treated With Chemotherapy and Surgery

S0820, Adenoma and Second Primary Prevention Trial

S1207 Hormone Therapy With or Without Everolimus in Treating Patients With Breast Cancer

Comparison of Axillary Lymph Node Dissection With Axillary Radiation for Patients With Node-Positive Breast Cancer Treated With Chemotherapy

Ipilimumab With or Without Nivolumab in Treating Patients With Melanoma That Is Stage IV or Stage III and Cannot Be Removed by Surgery

S1316, Surgery or Non-Surgical Management in Treating Patients With Intra-Abdominal Cancer and Bowel Obstruction

Veliparib, Pembrolizumab, and Combination Chemotherapy in Treating Patient With Locally Advanced Rectal Cancer