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Mammograms for breast screening

A mammogram is an x-ray of your breasts. Find out how you have it and what happens afterwards.

Preparing for a mammogram

There are no special preparations for a mammogram. You can eat and drink normally beforehand.

Having a mammogram

You have your mammogram in the breast screening unit. 

You take off your clothes from the waist upwards. You might put on a hospital gown.

You stand close to the x-ray machine. The radiographer positions one breast at a time between 2 flat metal plates on the machine. The plates press your breast firmly between them for a few moments. You will feel a little pressure and this might be uncomfortable.

You have two x-rays of each breast: one from the top and one from the side.

After your mammogram

You can get dressed and go home straight after the mammogram. You might have some tenderness in your breasts for up to a few hours.

Two people called film readers, image readers or radiologists look at the mammogram pictures. Around 96 out of 100 women (96%) in the breast screening programme have a normal result.

If the x-ray isn't clear enough or shows any abnormal areas, the clinic staff will call you back for more tests. You might need to have the mamograms taken again. 

What a mammogram can show

With early stage breast cancer, there might not be a lump. But your mammogram may show small areas of calcium in the breast tissue.

These areas of calcium are called calcification. But calcification also develops because of non cancerous changes in the breast. The skill and experience of the technicians and doctors helps them to read the different patterns and decide which might be related to cancer and so need further tests.

Some people have a condition called ductal carcinoma in situ (DCIS) that shows up on the mammogram. 

Getting your mammogram results

You usually receive a letter giving you the results within 2 weeks of having the test. If you don't receive your results within this time, contact the breast screening clinic.

If screening finds a cancer

If screening shows that you have cancer, it is likely to have been found early. This means you have an excellent chance of successful treatment.

Possible risks

A mammogram is a very safe procedure but the screening unit staff will tell you who to contact if you have any problems after your test.

Information and help

Dangoor sponsorship

About Cancer generously supported by Dangoor Education since 2010.