Canadian Cancer Society logo

Breast cancer

You are here: 

Benign breast conditions

Benign conditions of the breast are changes to the breast tissues that are not related to cancer and are not usually life-threatening.

  • atypical hyperplasia
  • breast pain (mastalgia)
  • breast cysts
  • fibroadenoma
  • fibrocystic breast changes
  • gynecomastia (breast enlargement in men)
  • mammary duct ectasia
  • nipple discharge
  • other benign conditions
    • radial scars
    • fat necrosis
    • adenosis


Researcher Dr Harvey Chochinov Dr Harvey Chochinov revealed that asking a simple question can improve cancer care.

Learn more

Clinical trial discovery improves quality of life

Illustration of test tubes

A clinical trial led by the Society’s NCIC Clinical Trials group found that men with prostate cancer who are treated with intermittent courses of hormone therapy live as long as those receiving continuous therapy.

Learn more