This illustration shows a device made by MammoSite used to deliver targeted doses of radiation as part of brachytherapy. Courtesy Radiological Society of North America hide caption

itoggle caption Courtesy Radiological Society of North America

Arlene Kalley and her daughter Leila, who support the use of Avastin for breast cancer, hold a banner outside the National Mall in Washington in June.

Terry Kalley/AP hide caption

itoggle caption Terry Kalley/AP

From left, Priscilla Howard, Crystal Hanna and Nancy Haunty, all breast cancer patients, listen at a Food and Drug Administration hearing on Avastin in Silver Spring, Md., on Tuesday. Joshua Roberts/Bloomberg via Getty Images hide caption

itoggle caption Joshua Roberts/Bloomberg via Getty Images

New York plastic surgeon Brad Jacobs holds a silicone gel breast implant in 2006. That year the FDA allowed silicone implants back on the market, after a 14- year hiatus. Spencer Platt/Getty Images hide caption

itoggle caption Spencer Platt/Getty Images