Mayo Clinic Minute: Do mammograms work?

Do I need to get screening mammograms, and, if so, how often should I get them? That's a question many women ask. Dr. Karthik Ghosh, director of the Mayo Clinic Breast Diagnostic Clinic, says mammograms are an essential tool for the early detection of breast cancer. The tests are not perfect, but they help diagnose cancer early ─ while it's still curable.