Breast cancer is a growth of abnormal cells in the breast. Men have a very small amount of breast tissue right under the nipple. This breast tissue can develop cancer, just like women's breasts can become cancerous. However, breast cancer in men is rare. There are about 1,000 cases per year in the US. It usually affects men in their 60s.
It is not really known why some men get breast cancer. It may be related to hormone levels. There may be a genetic (inherited) factor in some families. The cancer is more likely if you had mumps that involved the testicles after the age of 20.
Male breast cancer symptoms may include:
See your healthcare provider right away if you have any of these symptoms.
If you have discharge from a nipple, some of the discharge can be placed on a microscope slide and examined for cancer cells. If you have a breast lump or nipple rash, the tissue must be biopsied. A needle biopsy or surgical biopsy may be done.
When you have a needle biopsy, you are given a local anesthetic to numb the area of the breast being tested. Then your healthcare provider inserts a needle into the breast lump and withdraws fluid or tissue from the lump. If fluid fills the needle, the lump is probably a cyst and not cancer. Removing the fluid also makes fluid-filled lumps go away. Tissue withdrawn by the needle will be examined in the lab.
If you have a surgical biopsy, you will have a local anesthetic. The surgeon will make a cut in the skin and remove some or all of the lump. The tissue from the lump will be examined under a microscope. If cancer is found, you will also have lymph nodes removed from your armpit to see if cancer has spread beyond the breast.
Surgery is the standard treatment. This usually involves removing the nipple, all breast tissue, and the lymph nodes in the armpit. How much needs to be removed depends on how far the tumor appears to have spread. After surgery it is common to have treatment with anticancer drugs (hormones, chemotherapy) or radiation therapy.
For more information on cancer, contact national and local organizations such as:
We do not know how to prevent breast cancer in men.