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A screening mammogram is an X ray of the breast. The breast tissue is squeezed close to the X-ray machine. You will feel a few seconds of discomfort. Do not wear any of the following on the day of your mammogram:

• Deodorant
• Perfume
• Lotion
• Any other cosmetic product

These products can distort the mammogram. Screening mammograms are usually fully covered by insurance.

A diagnostic mammogram may be needed if your screening mammogram is abnormal. 聽They may also be done for a breast lump or change in shape or nipple discharge. A mammogram should always be done before surgery for breast cancer patients. They are usually covered by your insurance. You may have to meet your deductible for coverage.

A digital mammogram uses computerized sensors to take the image. These sensors are used instead of X-ray film.

A 3-dimensional (3-D) mammogram (digital tomosynthesis) takes a series of X-ray "slices". These "slices", or images, are then reviewed one by one. They can also be viewed one after another as a kind of movie. This is also known as digital tomosynthesis. 3-D mammograms are more sensitive. The images can provide more information.