Some types of breast cancer can be cured. One of the most curable types is also one of the most common: ductal carcinoma in situ, or breast cancer that is limited to the milk ducts. Twenty to 30 percent of all breast cancer cases are this type, and it can almost always be cured.
However, there are several types and stages of breast cancer, and some arenapos;t as curable. If breast cancer has spread past the breast and lymph nodes, it can seldom be cured. Still, most women with this type of breast cancer survive two years or more, and some survive up to 20 years with treatment.