Get the facts about treatment options for ductal carcinoma in situ.
Ductal carcinoma in situ (DCIS) is non-invasive breast cancer. Ductal means that the cancer starts inside the milk ducts, carcinoma refers to any.
Ductal carcinoma in situ (DCIS) is the presence of abnormal cells inside a milk duct in the breast. DCIS is considered the earliest form of breast cancer. DCIS is usually found during a mammogram done as part of breast cancer screening or to investigate a breast lump.