Mammogram:An X-ray of the breast that is taken with a device that compresses and flattens the breast. A mammogram can help a health professional decide whether a lump in the breast is a gland, a harmless cyst, or a tumor. A mammogram can cause pressure, discomfort, and some soreness that lasts for a little while after the procedure. If the mammogram result raises suspicions about cancer, a biopsy is usually the next step.
