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Mammography Print Friendly and PDF

Mammography is a specific type of breast imaging that uses low-dose x-rays to detect cancer early—before women experience symptoms—when it is most treatable. Mammography plays a central part in the early detection of breast cancers because it can show changes in the breast up to two years before you or your physician can feel them. The American Medical Association (AMA) and the American College of Radiology (ACR) recommend annual mammograms for women over 40. The National Cancer Institute (NCI) adds that women who have a personal or family history of breast cancer should talk to their doctor about when they should begin screening mammograms. We also recommend that you read about our Screening and Risk Assessment Program.

See our breast health page for more information about mammography.