This issue of Surgical Oncology Clinics of North America is devoted to "Breast Cancer" and is edited by Lisa Newman, MD, of the University of Michigan. Expert authors in this issue review this topic in articles such as: Applications for Breast MRI; Lobular Neoplasia; Epidemiology of Breast Cancer; Percutaneous Ablation of Breast Tumors; Triple Negative Breast Cancer and the Basal Breast Cancer Subtype; Molecular Profiling of Breast Cancer; Surgical Leadership and Standardization of Multidisciplinary Breast Cancer Care; Neoadjuvant/Primary Systemic Therapy for Breast Cancer; Management of the Clinically Node-Negative Axilla in Patients with Primary and Locally-Recurrent Breast Cancer; Management of the Axilla in Patients with Node-Positive Breast Cancer; Prophylactic Bilateral Mastectomy and Contralateral Prophylactic Mastectomy; Advances in Reconstruction of Mastectomy and Lumpectomy Defects; Nipple-Sparing Mastectomy; and Breast Cancer Disparities.