Male breast cancer
Breast cancer in men is a rare cancer that can develop in the small amount of breast tissue men have behind their nipples.
The main symptom of breast cancer in men is a hard lump in one of your breasts. The lump is almost always painless.
It's not clear exactly what causes breast cancer in men, although several things that can increase your risk of developing the condition have been identified.
If you have symptoms of breast cancer, such as a hard, painless lump in one of your breasts, your GP will carefully examine you.
Breast cancer in men is treated using a combination of surgery, radiotherapy and medication
When John found a lump in his breast, he had no idea it was a sign of cancer. He tells us his story.