"Preventive mastectomies" refers to the surgical removal of one or both breasts before any signs of breast cancer are present. It is done as a preventive measure to reduce the risk of developing breast cancer in the future. Full definition
Rates of women who are opting for preventive mastectomies, such as Angeline Jolie, have increased by an estimated 50 percent in recent years, experts say. (nbcnews.com)
I took my life into my own hands and underwent surgery for a double preventive mastectomy with reconstruction in 2010. (purebarre.com)
For example, one might choose preventive mastectomy, like Angelina Jolie did; other women might choose a very intensive screening strategy. (newscientist.com)