About contrast mammograms

A standard mammogram is an X-ray of the breast.

A contrast mammogram is similar, but a special dye is used to highlight areas of concern in the breast. This is better than a standard mammogram at showing breast cancer or other abnormal areas. This is especially useful when other scan results are uncertain. 

Before the test

Contact us

Telephone the radiology department (number below) before your appointment:

  • if you are pregnant
  • if have diabetes
  • if you have kidney problems.

You can also call if you have any questions.

  • Clothing
    Wear a two-piece outfit so you can easily remove your top.
  • Food and drink
    You can eat and drink as usual unless we tell you otherwise.
  • Allergies
    Tell us if you have allergies, especially to contrast dye or iodine.
  • Medications
    Continue taking your usual medications unless we tell you otherwise.

During the test

  • We will ask you to undress down to your waist and put on a hospital gown. You will also need to remove any necklaces.
  • We will insert a small plastic needle into a vein in your arm or back of your hand. This is then used to insert the dye.
  • We will help position you on the mammogram machine. This will involve compressing your breast(s) between two plates while X-rays are taken. This involves a small dose of radiation.
  • Afterwards, we will ask you to wait back in the waiting area. The needle in your arm will be left in place for a few minutes in case you need more treatment. We will remove this before you go home.
  • All this usually takes around 30 minutes.

After the test

  • You may experience a warm sensation or a metallic taste after the dye injection.
  • Drink plenty of fluids to help flush out the dye.
  • You can carry on with normal activities immediately.

Possible risks

The following side effects are possible. Telephone the department if you have any side effects and need advice.

  • Allergic reaction to the dye is rare. Tell staff if you experience itching, rash, or difficulty breathing. If this happens once you have left the hospital, dial 111 or go to your nearest Emergency department (A&E).
  • Discomfort or pain is common when the breast is compressed during the scan.
  • Kidney issues are uncommon. Tell staff before the test if you have kidney problems.

Results

We will discuss your results at our regular Multi Disciplinary Team (MDT) meeting. This involves a range of specialists meeting to discuss results and, if necessary, treatment options. We will then contact you to discuss the results. This is usually within 7 to 10 days of your scan.

Contact information

Kingston Hospital Breast Radiology Department

Telephone:

020 8934 6600 (9am to 5pm)