Any type of breast cancer that occurs in women can also affect men. Some of the more common ones are:
There are two types of invasive breast cancer. Invasive ductal carcinoma (IDC) starts in the breast duct and can then break through the duct wall, invading the fatty tissue of the breast. It can also spread to other parts of the body. IDC is the most common type of breast cancer in men.
Invasive lobular carcinoma is much less common in men. It originates in the lobules (the glands that produce milk) and has the potential to spread to other areas of the body.
Also known as intraductal carcinoma, ductal carcinoma in situ (DCIS) is a preinvasive cancer. Cancer cells are contained in the breast ducts, but they do not invade the breast’s fatty tissue or spread outside the breast. DCIS can usually be cured with surgery and radiation therapy.