Ductal carcinoma in situ DCIS means the cells that line the milk ducts of the breast have become cancer, but they have not spread into surrounding breast tissue. DCIS is considered non-invasive or pre-invasive breast cancer. But sometimes a mastectomy might be a better option. In breast-conserving surgery BCS , the surgeon removes the tumor and a small amount of normal breast tissue around it. Lymph node removal is not always needed with BCS, but it may be done if the doctor thinks the area of DCIS might also contain invasive cancer.
DCIS (ductal carcinoma in situ) explained | Breast Cancer Now
Invasive ductal carcinoma IDC , sometimes called infiltrating ductal carcinoma, is the most common type of breast cancer. Carcinoma refers to any cancer that begins in the skin or other tissues that cover internal organs — such as breast tissue. Over time, invasive ductal carcinoma can spread to the lymph nodes and possibly to other areas of the body. According to the American Cancer Society, more than , women in the United States find out they have invasive breast cancer each year.
What is DCIS? What are the symptoms of DCIS? How is DCIS diagnosed? How is DCIS graded? Can DCIS develop into invasive breast cancer?
Ductal carcinoma in situ DCIS is non-invasive breast cancer. Ductal means that the cancer starts inside the milk ducts, carcinoma refers to any cancer that begins in the skin or other tissues including breast tissue that cover or line the internal organs, and in situ means "in its original place. When you have had DCIS, you are at higher risk for the cancer coming back or for developing a new breast cancer than a person who has never had breast cancer before. Most recurrences happen within the 5 to 10 years after initial diagnosis. Learn what additional steps you can take to lower your risk of a new breast cancer diagnosis or a recurrence in the Lower Your Risk section.