ON THIS PAGE: You will find some basic information about this disease and the parts of the body it may affect. This is the first page of Cancer.Net’s Guide to Breast Cancer. To see other pages, use the menu on the side of your screen. Think of that menu as a roadmap to this full guide.
In the United States, breast cancer is the most common cancer in women (excluding skin cancer). Men can also develop breast cancer, but breast cancer in men is rare, accounting for less than 1% of all breast cancers.
About the breast