Mammograms: Patient Education from University of Colorado Hospital

Who Should Have a Mammogram?

Talk to your caregiver about mammograms and when you should have them. The American Cancer Society suggests the following:

  • All women 40 years and older should have a mammogram each year.
  • Younger women who are at high risk for getting breast cancer should talk to a caregiver about mammograms.

What are the Risks of Having a Mammogram?

During a mammogram, you will be exposed to a very small amount of radiation. You may get about the same amount of radiation as spending one hour out in the sun. Without a mammogram, breast cancer may not be found in time for effective treatment.

How do I Get Ready for a Mammogram?

  • Take a shower or bath before the mammogram. Do not put deodorant, powder, lotion, or perfume on your breasts or under your arms. Doing this may cause the mammogram pictures to turn out wrong.
  • Wear a two-piece outfit like a shirt and pants or a skirt. For the mammogram, you will be asked to take off all your clothes from the waist up. Do not wear any jewelry around your neck.
  • Call your caregiver if you cannot come to your mammogram appointment on time. You should also call the caregiver if you have questions or concerns about the mammogram.
  • Bring a list of the dates and places of your past mammograms and other breast tests or treatments.

How is a Mammogram Done?

Two x-rays are usually done for each breast, one top view and one side view. If you have breast implants or breast problems, more x-rays may need to done. A regular mammogram usually takes about 20 minutes.

  • You will be given a hospital gown. Take off all your clothes from the waist up. Wear the hospital gown so that it opens in the front.
  • Tell the person doing the mammogram if you have breast implants. Tell them about any breast problems or changes before you have the mammogram. Tell them if you are nervous, scared, or upset about having a mammogram. The person may ask if you take hormone medicine, have family members with breast cancer, and other questions.
  • You will sit or stand next to a small x-ray table. The caregiver doing the test will help you place one of your breasts on the x-ray plate. Your breast will be moved until the correct position has been found.
    • Your breast will be gently flattened between two plastic plates for a few seconds. Having your breasts spread flat and wide helps your caregiver take the best mammogram picture. This makes it easier for them to see if there are any problems in your breasts. Your breasts will be flattened only long enough to get an x-ray picture. You may feel uncomfortable while your breasts are flattened.
    • You will be asked to hold your breath while the x-ray is taken. Another x-ray will be taken of the same breast after the position of the x-ray machine has been changed.
    • Your other breast will be x-rayed the same way.

What if I have Large or Tender Breasts?

Breast implants – It is important for your caregiver to know about your breast implants before you have your mammogram. Your caregiver may need to take extra x-rays of each breast. You may have four x-rays per breast, while a person without implants may only have two x-rays per breast. Special care will be taken during your x-rays so that your implants will not break. Your mammogram may take 20 to 30 minutes or longer.

Breast feeding – You may have a mammogram even if you are breast feeding. Express as much milk as possible from your breasts before the mammogram.

Tender breasts – If your breasts are tender before your monthly period, do not have a mammogram during this time. Schedule your mammogram to be done one week after your regular period.

What Happens after my Mammogram?

  • Your breasts may feel tender for a short while after the mammogram. You may do all your regular activities right after the mammogram. Ask your caregiver when you should have another mammogram.
  • Women 20 to 39 years old should have their breasts examined by a caregiver at least every three years. Women 40 years and older should have their breasts examined by a caregiver every year.

All women 20 years and older should do regular breast self-exams (BSE). Doing BSEs can help you learn what your breasts normally look and feel like. Knowing what is normal for your breasts can help you quickly know when breasts changes happen. Breast changes may be swelling, lumps, or dimpling, scaling, and redness of the breast or nipple. Some other changes are pain, nipple discharge (that is not breast milk), and nipples that begin to pull inward. Call a caregiver right away if you have any breast changes that you think may not be normal. Do this even if you have just recently had a mammogram. Ask your caregiver to give you information about how to do a BSE.