Understanding preventive mastectomies

Actress Angelina Jolie’s announcement that she chose to undergo a preventive double mastectomy is shining light on the procedure as well as gene mutations that can indicate a high risk for breast cancer and ovarian cancer. In this video, Dr. Rena Kass, co-director of Penn State Hershey Breast Center, talks about testing for those mutations and why some women choose to have preventive mastectomies.