Breast cancer can begin in different areas of the breast such as the ducts, the lobules, or in some cases, the tissue in between. Learn about the different types of breast cancer, including ductal carcinoma in situ, invasive ductal carcinoma, invasive lobular carcinoma, metastatic breast cancer, and more. Sep 25, 2017 · There are many types of breast cancer. The most common types are ductal carcinoma in situ, invasive ductal carcinoma, and invasive lobular carcinoma. The type of breast cancer is determined by the specific cells in the breast that are affected. Most breast cancers are carcinomas. Carcinomas are Last Revised: September 25, 2017.
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. Breast Cancer Types Ductal Carcinoma in situ. Ductal Carcinoma in situ. Ductal Carcinoma in Situ (DCIS) is a non-invasive breast cancer where abnormal cells have been contained in the lining of the breast milk duct. Learn More. Invasive Ductal Carcinoma. Invasive Ductal Carcinoma.
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. Breast cancer symptoms vary widely – from lumps to swelling to skin changes – and many breast cancers have no symptoms at all. Symptoms that are similar to those of breast cancer may be the result of non-cancerous conditions such as infection or a cyst. Learn more about the symptoms and diagnosis of breast cancer.