The most common types of breast cancer are:
Invasive lobular carcinoma: This disease, accounting for one in 10 breast cancers, begins in the lobules, or the glands of the breast that make milk.
Invasive ductal carcinoma: This cancer, accounting for about eight in 10 breast cancers, begins in the breast’s milk ducts, the thin tubes that carry milk from the lobules to the nipple.