Nov 04, · Other types of breast cancer include sarcoma of the breast, metaplastic carcinoma, adenocystic carcinoma, phyllodes tumor and angiosarcoma. Breast cancer is also classified based on where in the breast the disease started (e.g., milk ducts, lobules), how the disease grows and other factors. Genomic research has also led to a more specific. Breast cancers are ER-positive, HER2-positive, or triple negative. The type of breast cancer you have determines the type of medication you take. Learn more from experts at WebMD.
The type of tissue where your breast cancer arises determines how the cancer behaves and what treatments are most effective. Parts of the breast where cancer begins include: Milk ducts. Ductal carcinoma is the most common type of breast cancer. This type of cancer forms in the lining of a milk duct within your breast. In situ breast cancer (ductal carcinoma in situ or DCIS) is a cancer that starts in a milk duct and has not grown into the rest of the breast tissue. The term invasive (or infiltrating) breast cancer is used to describe any type of breast cancer that has spread (invaded) into the surrounding breast .
Jul 16, · The number staging system for breast cancer divides breast cancers into 4 stages, from 1 to 4. Stage 1 is the earliest stage and stage 4 means the cancer has spread to another part of the body. Stage 1 Stage 1 breast cancer means that the cancer is small and only in the breast tissue, or it might be found in lymph nodes close to the breast. Oct 16, · Breast cancer can begin in different areas of the breast — the ducts, the lobules, or in some cases, the tissue in between. In this section, you can learn about the different types of breast cancer, including non-invasive, invasive, and metastatic breast cancers, as well as the intrinsic or molecular subtypes of breast cancer.