General Information Before you’re Next Mammogram

Mammograms don’t prevent breast cancer, but they can save lives by finding breast cancer as early as possible. The value of screening mammograms was questioned when the U.S. Preventive Services Task Force recommended that routine screening mammograms for women with an average risk of breast cancer should start at age 50 instead of age 40. The recommended changes were very controversial and were not universally adopted. Finding breast cancers early with mammography has also meant that many more women being treated for breast cancer are able to keep their breasts. When caught early, localized cancers can be removed without resorting to breast removal. The main risk of mammograms is that they aren’t perfect. Normal breast tissue can hide breast cancer so that it doesn’t show up on the mammogram. This is called a false negative. And mammography can identify and abnormality that looks like cancer but turns out to be normal. This “false alarm” is called a false positive. Besi...