Other male breast disorders

Gynaecomastia is the most common breast disorder in men. It is a non-cancerous enlargement of the breast. In its early stages gynaecomastia can appear as a firm lump under one or both nipples. It is a result of an imbalance in the male and female hormones in the body. Male and female hormones occur naturally in both men and women. Causes of gynaecomastia can include puberty, genetic disorders, chronic liver disease, side effects of medications, Klinefelter’s syndrome, testicular abnormality or injury, steroid use and old age.

There is no clear evidence that gynaecomastia is a risk factor for male breast cancer. Some men with gynaecomastia may develop breast cancer whereas others may not. For more information on risk factors for male breast cancer click here

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