Breast cancer

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If breast cancer spreads

Cancer cells can spread from the breast to other parts of the body. This spread is called metastasis.

Understanding how a type of cancer usually grows and spreads helps your healthcare team plan your treatment and future care.

If breast cancer spreads, it usually spreads to regional lymph nodes. These are lymph nodes on the same side of the body as the tumour in the following areas:

  •  under the arm
  •  around the collarbone
  •  around the breastbone

Breast cancer can also spread to:

  • muscles on the chest
  • the skin on the breast
  • bones (usually the spine, ribs or legs)
  • the liver
  • the lungs
  • the brain

Stories

Researcher Dr Ming-Sound Tsao Dr Ming-Sound Tsao created a realistic lab model of lung cancer.

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Providing rides to cancer treatment

Illustration of car

For more than 50 years, the Canadian Cancer Society’s transportation program has enabled patients to focus their energy on fighting cancer and not on worrying about how they will get to treatment.

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