Types of Breast Cancer
Breast cancer can begin in different areas of the breast – the ducts, the lobules, or in some cases, the tissue in between. Breast cancer is not a single disease. There are many types of breast cancer, and they may have vastly different implications. Breast cancers range from localized cancers such as ductal carcinoma in situ (DCIS) to invasive cancers that can rapidly spread (metastasize). In the middle of the spectrum are breast cancers, such as colloid carcinomas and papillary carcinomas, which have a much more favorable outlook (prognosis) than the other more typically invasive breast cancers. Sometimes, noninvasive DCIS is found around invasive breast cancers.