This resource is based on the best possible evidence from research studies, as well as National Institute for Health and Care Excellence’s guidelines, quality standards, clinical knowledge summaries and known best practice. All information was checked by appropriate experts and women with secondary breast cancer.

However, any decisions about an individual’s breast cancer, and treatment and care, should be made with reference to their specific condition and, where appropriate, to specialist medical advice.

For more information about our sources of evidence, please contact Breast Cancer Now at or 0333 20 70 300.

Our health information

People affected by breast cancer are at the heart of Breast Cancer Now’s health information. We want our facts about breast cancer risk, breast awareness, diagnosis, treatment and services to give you the knowledge and confidence you need to make decisions about your health and health care.

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Breast Cancer Now’s health information is produced following best practice guidelines developed by the Patient Information Forum. 

Find out more about how we develop our health information and the Patient Information Forum.

We value your feedback

If you’d like to let us know what you think of our guide or have any comments you’d like to share with us please contact or call 0333 20 70 300.