Why is DCIS treated?
The aim of treating DCIS is to prevent invasive breast cancer from developing. If DCIS is not treated it may develop into invasive breast cancer, which can spread outside the ducts into the breast tissue and then possibly to other parts of the body. We don’t know for certain how many women with DCIS would develop invasive breast cancer if they were not treated. Also, it’s not possible to predict which women with DCIS will develop invasive breast cancer if they are not treated or how long after a diagnosis of DCIS an invasive breast cancer might develop. Some women with DCIS may never develop any problems if they are not treated. However, some women with DCIS may develop invasive breast cancer. Because DCIS may develop into invasive breast cancer and invasive breast cancer can spread and cause death, all women with DCIS are recommended to have treatment. Treatment for DCIS aims to help prevent invasive breast cancer from developing and DCIS from coming back in the breast. DCIS can be tr
