What does it mean when a woman says she has breast cancer?
There are different types of breast cancer based upon where the cancer begins. The breast is composed of lobules, the gland that produces milk in nursing women, and tiny tubes (ducts) that carry the milk to the nipple. Although the most common types of breast cancer are ductal and lobular, they are not the only types. And each type has sub-types.
Globally, more than 1,300,000 cases of breast cancer are diagnosed each year; 450,000 patients die of the disease.