Male breast cancer is cancer that forms in the breast tissue of men. Though breast cancer is most commonly thought of as a woman's disease, male breast cancer does occur. Male breast cancer can occur at any age but it is most common in older men.Many people are unaware that men can get breast cancer and that they also have breasts. Men do have a small amount of breast tissue behind their nipples. This is where breast cancer can develop.
Some men inherit mutated genes from their parents that increase the risk of breast cancer. Mutations in one of several genes, especially a gene called BRCA2, put you at greater risk of developing breast and prostate cancers. The normal function of these genes is to help prevent cancer by making proteins that keep cells from growing abnormally. But if they have a mutation, the genes aren't as effective at protecting you from cancer.
Symptoms of breast cancer in men are very similar to those in women. Most male breast cancers are diagnosed when a man discovers a lump on his chest. However, men deal with more severe symptoms that may include bleeding from the nipple and abnormalities in the skin above the cancer. At that point the cancer may have already spread to the lymph nodes.