What are the different types of breast cancer?

There are many types of breast cancer. Some are more common than others, and there are also combinations of cancers. Some of the most common types of cancer are as follows:
Ductal carcinoma in situ: The most common type of noninvasive breast cancer is ductal carcinoma in situ
(DCIS). This type of cancer has not spread and therefore usually has a very high cure rate.
Invasive ductal carcinoma: This cancer starts in a duct of the breast and grows into the surrounding tissue. It is the most common form of breast cancer. About 80% of invasive breast cancers are invasive ductal carcinoma.
Invasive lobular carcinoma: This breast cancer starts in the glands of the breast that produce milk. Approximately 10% of invasive breast cancers are invasive lobular carcinoma.
The remainder of breast cancers are much less common and include the following:
 Mucinous carcinoma are formed from mucus-producing cancer cells.
Mixed tumors contain a variety of cell types.
Medullary carcinoma is an infiltrating breast cancer that presents with well-defined boundaries between the cancerous and noncancerous tissue.