Understanding breast cancer once you create an account at breastcancerorg you can enter information about your breast cancer diagnosis eg breast cancer stage plan your treatments and track your progress through treatments based on your unique information breastcancerorg can recommend articles that are highly relevant to your situation. Types of breast cancer overview ductal carcinoma in situ dcis invasive breast cancer idc ilc triple negative breast cancer angiosarcoma of the breast inflammatory breast cancer paget disease of the 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 tissue