Screening patients for breast cancer with mammography should start at age 40 and continue annually as long as the patient is in good health. For women at high risk for breast cancer, most medical societies recommend annual mammography as well as a magnetic resonance imaging (MRI) scan starting at age 35. If screening mammogram reveals an abnormality or if there is a suspicious breast-related symptom or sign (e.g., mass, skin change), a diagnostic mammogram is performed. After the radiologist interprets the imaging, he or she will assign a Breast Imaging-Reporting and Data System (BI-RADS) score. These scores standardize the reporting of mammographic findings as well as offer recommendations for further work-up.