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The surgical management of breast cancer has changed considerably since the use of the Halstedian radical mastectomy early in the 20th century. Over the last 50 years, several landmark clinical trials from the USA and Europe have resulted in a paradigm shift in the management of breast cancer toward less radical forms of surgery with the combined use of multi-modality treatments including systemic chemotherapy, endocrine therapy, and radiotherapy. Advances in such research have established a new worldwide standard of care for breast cancer surgical management and treatment, which has become more patient centric and which places a higher emphasis on cosmesis and improved patient quality of life. In this chapter, we review the landmark clinical trials that have influenced surgical management for non-invasive and invasive breast cancer and that serve to guide current clinical practices to date., (© 2014 Wiley Periodicals, Inc.)

Breast-conserving therapy consisting of segmental mastectomy followed by whole-breast irradiation (WBI) has become widely accepted as an alternative to mastectomy as a treatment for women with early-stage breast cancer. WBI is typically delivered over the course of 5-6 weeks to the whole breast. Hypofractionated whole-breast irradiation and accelerated partial breast irradiation have developed as alternative radiation techniques for select patients with favorable early-stage breast cancer. These radiation regimens allow for greater patient convenience and the potential for decreased health care costs. We review here the scientific rationale behind delivering a shorter course of radiation therapy using these distinct treatment regimens in this setting as well as an overview of the published data and pending trials comparing these alternative treatment regimens to WBI., (© 2014 Wiley Periodicals, Inc.)

In this paper we provide a summary of several of the completed and ongoing surgical trials of the National Surgical Adjuvant Breast and Bowel Project, one of the cancer cooperative trials groups supported by the US National Cancer Institute.