Decision Analysis — Effects of Prophylactic Mastectomy and Oophorectomy on Life Expectancy among Women withBRCA1orBRCA2Mutations

Abstract
Women with BRCA1 or BRCA2 mutations have an increased risk of breast cancer and ovarian cancer. Prophylactic mastectomy and oophorectomy are often considered as ways of reducing these risks, but the effect of the procedures on life expectancy has not been established.