About Men’s Health | Male Breast Cancer

    Breast cancer is not just a women’s disease, and as we head into Breast Cancer Awareness Month it’s good to take a moment to talk about this disease and how it affects men.

    Although male breast cancer is rare, knowledge of this disease is perhaps hampered by a cultural belief that males should avoid talking about physical problems. This truism extends to men’s health in general, and in subjects such as male breast cancer there is a perceived stigma.

    But this disease is no small matter. Male breast cancer can be lethal. Paying attention to the warning signs is critical.

    Signs & Symptoms of Male Breast Cancer

    Signs & symptoms could include the following:

    • Painless lump or thickening in the breast tissue.
    • Changes to the skin of the breast, such as dimpling, puckering, redness or scaling.
    • Changes to the nipple, such as redness or scaling, or a nipple that begins to turn inward.
    • Discharge from the nipple.

    Where breast cancer begins in men

    Everyone is born with a small amount of breast tissue. During puberty, women begin developing more breast tissue, and men do not. However, men can develop breast cancer.

    Types of breast cancer diagnosed in men include:

    • Cancer in the milk ducts (ductal carcinoma). Most male breast cancer is ductal carcinoma.
    • Cancer that begins in the milk-producing glands (lobular carcinoma). Rare in men due to the small amount of lobules in their breast tissue.
    • Cancer spread to the nipple (Paget’s Disease of the nipple). Rarely, male breast cancer forms in the milk ducts and spreads to the nipple, causing crusty, scaly skin around the nipple.


    The causes of male breast cancer are unclear. Researchers know that male breast cancer occurs when some breast cells divide more rapidly than healthy cells do. The accumulating cells form a tumor that may spread (metastasize) to nearby tissue, to the lymph nodes, or to other parts of the body.

     Inherited genes that increase breast cancer risk

    Like women, men can inherit abnormal (mutated) genes from their parents with a higher risk of breast cancer. The BRACA2 gene mutations especially increase risk. Such genes typically produce proteins that control cell growth and prevent abnormal growth. But mutated genes are not as effective as protecting from cancer.

    Undergoing genetic testing (RMI offers gene testing) can be useful in assessing the risk for male breast cancer.

    RMI Cares About Male Breast Cancer

    RMI reminds men to pay attention to what their body is telling them. And don’t feel hesitant or embarrassed to speak to your primary care physician if you have concerns. Ignoring warning signs is not a sign of manliness, and it could result in deadly serious consequences going forward.