1. What is breast screening?
Breast screening uses a breast x-ray, called a mammogram, to look for cancer that may be too small to see or feel.
The sooner breast cancer is diagnosed, the more effective treatment is likely to be. Screening can pick up breast cancer before there are any signs or symptoms.
How can I make an appointment?
If you're a woman aged 50 or over, you'll be automatically invited for breast screening through your GP practice every 3 years until your 71st birthday.
If you want to ask for an appointment because you're 71 or over and are no longer automatically invited for screening, you'll need to contact your local screening unit.
Find out how to contact your local screening unit on the NHS website.
2. When will I be invited for breast screening?
Breast screening age
In the UK, women aged 50 or over are invited for a mammogram every 3 years until their 71st birthday. This is part of a national breast screening programme.
This may not happen the year you turn 50, but it will happen by the time you’re 53.
You have to be registered with a GP to be automatically invited for screening.
If you're transgender or non-binary
Some transgender or non-binary people can access breast screening. This includes:
- Transgender men and non-binary people assigned female at birth who have not had an operation to remove their breast tissue
- Transgender women and non-binary people assigned male at birth who have taken feminising hormones
Whether you are invited for breast screening will depend on whether you are registered with your GP as female or male.
Talk to your GP or gender identity clinic for more information, or call your local breast screening service. You can find this on the NHS website (NHS.uk)
Why are women under 50 not invited for screening?
Women under 50 are not automatically invited for breast screening because the number of women who get breast cancer is much lower in this age group.
Over 80% of breast cancers occur in women over the age of 50 and the risk continues to increase with age.
Younger women also have denser breast tissue, which can make the x-ray image less clear and changes harder to identify.
3. Breast screening after 70
If you’re 71 or over, you will not be automatically sent an invitation for screening.
However, in some parts of the UK you can continue to have breast screening every 3 years if you contact your local breast screening unit and ask for it.
Your GP surgery can put you in touch with your local breast screening clinic or you can look them up online.
Find out how to contact your local screening unit on the NHS website.
4. Benefits and disadvantages of screening
Benefits
Screening finds breast cancer early
Breast screening can find a breast cancer early, before it can be seen or felt.
The sooner breast cancer is found, the more likely it is to respond well to treatment, and the less likely you are to need more extensive surgery.
Screening prevents deaths
Screening prevents an estimated 1,300 deaths from breast cancer each year in the UK.
Disadvantages
It can be uncomfortable
Some people find having a mammogram uncomfortable. However, this isn’t always the case and a mammogram only takes a few seconds.
Some women will be offered unnecessary treatment
Some cancers found through screening will not develop any further or will grow so slowly they will never cause any harm during a person’s life.
At the moment, doctors cannot tell which cancers can be left alone, so treatment is offered for all breast cancers. This means some people may have unnecessary treatment (known as overtreatment).
A small number of cancers are missed
Mammograms are the most reliable way of detecting breast cancer sooner. However, they’re not 100% reliable and a small number of breast cancers are missed.
Being recalled can cause worry and distress
Around 4 out of every 100 women screened are recalled for further assessment. This is usually because an area has shown up on the mammogram and more information is needed before a result can be given.
The majority of people recalled do not have breast cancer. However, being recalled or having more tests can cause a lot of worry and distress.
You’re exposed to a small amount of radiation
Having a mammogram every 3 years for 20 years means being exposed to a small amount of radiation. This can very slightly increase the risk of developing breast cancer in the future.
The amount of radiation you are exposed to during a mammogram is very low, and you would receive a similar amount from a return flight between London and Australia.
5. What happens during breast screening?
Your appointment will be at a breast screening unit
This might be a breast screening clinic or a mobile screening unit.
You’ll be asked to complete a questionnaire. It will ask about any ongoing medical conditions, if you’re having hormone replacement therapy (HRT), and if you’ve had any breast problems.
Your mammogram will be carried out by a woman
A female mammography practitioner (an expert in taking breast x-rays) will explain what will happen and answer any questions you have.
Let her know if you’re pregnant or think you may be pregnant.
You’ll be asked to remove your clothing from the waist up
You’ll stand in front of the mammogram machine.
Your breasts will be placed 1 at a time on the x-ray machine. The breast will be pressed down firmly on the surface by a clear plate.
At least 2 pictures (x-rays) of each breast will be taken, 1 from top to bottom and then a second from side to side to include the part of your breast that extends into your armpit. You’ll need to stay in position while the pictures are taken.
Taking the pictures only takes a few seconds.
6. Getting your results
The results of your screening mammogram are sent by post to you and your GP.
Most people will receive a letter telling them their mammogram showed no signs of cancer. They’ll be invited for screening again in 3 years.
Some people will get a letter asking them to come back for further assessment. This is because more tests are needed to assess a change seen on the mammogram. Being recalled doesn’t necessarily mean you have breast cancer.
Occasionally some people receive a letter asking them to go back for another mammogram because a technical issue meant the image was unclear.
7. Staying breast aware between mammograms
Having mammograms cannot prevent breast cancer, and it’s possible for breast cancer to develop in the 3 years between each mammogram.
It’s important to continue to be breast aware and report any changes to your GP even if you have had a mammogram recently.
