Breast cancer

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Non-cancerous conditions of the breast

A non-cancerous (benign) condition of the breast is a change to breast cells, but it is not cancer. Non-cancerous conditions do not spread (metastasize) to other parts of the body and are not usually life-threatening.

The most common non-cancerous conditions of the breast are:

  • atypical hyperplasia
  • breast pain (called mastalgia)
  • breast cysts
  • fibrocystic breasts
  • nipple discharge

Other non-cancerous conditions that affect the breast include:

  • adenosis
  • breast infection (called mastitis)
  • fat necrosis
  • gynecomastia (breast enlargement in men)
  • mammary duct ectasia
  • radial scars

Stories

Dr Shawn Li I’m extremely grateful to the Canadian Cancer Society for funding my research with an Innovation Grant.

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Taking action against all cancers

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The latest Canadian Cancer Statistics report found that of all newly diagnosed cancers in 2017, half are expected to be lung, colorectal, breast and prostate cancers. Learn what you can do to reduce the burden of cancer.

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