The goal of screening for breast cancer is to find breast cancer at early, more treatable stages. Ways to screen for breast cancer include breast self-examination, clinical breast examination, and mammography. Mammography is an x-ray of the breast that often shows breast tumors before they are large enough to feel. Several types of screening exist: traditional film mammography, digital mammography, and magnetic resonance imaging (MRI). The USPSTF has updated their recommendations from 2002.