Ductal carcinoma in situ (DCIS) -- sometimes also called intraductal carcinoma -- is an early form of breast cancer. Because the cancer cells are still within a duct and have not invaded deeper into the surrounding fatty breast tissue, it is considered to be Stage 0. It is is not invasive but represents abnormal cells within the ducts of the breasts.
According to the American Cancer Society, about one in five new breast cancer cases will be DCIS, which equals to approximately 60,000 new cases of DCIS diagnosed in this country each year. Nearly all women diagnosed at this early stage of breast cancer can be cured.
DCIS is treated at the Abramson Cancer Center, within the Rena Rowan Breast Cancer Center, and within the Integrated Breast Center at Pennsylvania Hospital.