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Marginal life expectancy benefit from contralateral prophylactic mastectomy — ScienceDaily

To assess the survival benefit of CPM, Pamela R. Portschy, of the Department of Surgery, University of Minnesota, Minneapolis, and colleagues, developed a model simulating survival outcomes of CPM or no CPM for women with newly diagnosed stage I or II breast cancer, using data from the Surveillance, Epidemiology, and End Results (SEER) registry and large meta-analyses. Survival benefit projections were made for women by age (40, 50, or 60 years), breast cancer stage (I or II), and estrogen receptor (ER) status (positive or negative). Women with BRCA mutations were excluded from the analysis because they have a much higher risk of developing contralateral breast cancer. …