When your regular mammogram has shown an abnormality or you have a symptom such as a lump in your breast, breast pain or nipple discharge, the next step in determining if there is something wrong is a diagnostic mammogram. This type of mammogram gives a more detailed picture of the breast and takes a bit more time to perform as your radiologist zeroes in on a suspicious area. Not only can it detect a small tumor that can’t be felt in a physical exam, but it can also allow your doctor to identify any precancerous conditions. A diagnostic mammography involves placing your breast between two metal plates that capture pictures of your tissue. This may be uncomfortable, but your technician will work with you to make you as comfortable as possible. If this test is not done in a doctor’s office, the results will be sent to your doctor for review.