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About Cancer

Breast cancer

Breast cancer is cancer that starts in the breast tissue. The most common symptom is a lump or swelling. Treatment might include surgery, chemotherapy, hormone therapy, and radiotherapy.

Last reviewed: 15 Apr 2026

Next review due: 15 Apr 2029

Reviewed by: 

This section has been written, reviewed and updated by Cancer Research UK’s Patient Information Web Team. Thanks to the expert medical professionals and people affected by cancer who have helped to review this information.

  • Professor Ramsey Cutress (Consultant Surgeon and Professor of Breast Surgery)

  • Dr Andrea Stevens (Consultant Clinical Oncologist)

  • Dr Carmel Anandadas (Consultant Clinical Oncologist)

  • Mr Debasish Debnath (Consultant Oncoplastic and Reconstructive Breast Surgeon)

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