How serious is DCIS cancer? DCIS is non-invasive because it hasn’t spread beyond the milk ducts into other healthy tissue. DCIS isn’t life-threatening, but if you’re diagnosed with DCIS, you have a higher-than-average risk of developing invasive breast cancer later in life.
Is DCIS really breast cancer? The cells lining the milk ducts turn malignant (cancerous) but stay in place (in situ). DCIS is an early form of breast cancer. It is not invasive — the malignant cells do not grow through the wall of the duct or spread to lymph nodes or the blood stream. DCIS accounts for about 20% of breast cancers.
How aggressive is DCIS breast cancer? As a result, DCIS is generally not immediately life threatening. However, it is estimated that 14–53% of women diagnosed with DCIS subsequently develop invasive ductal carcinoma (IDC) if the DCIS is left untreated or inadequately treated –.
What is the survival rate of DCIS? Although DCIS doesn’t pose any risk, it can turn invasive and spread to other tissues at any time. The five-year survival rate of ductal carcinoma in situ (DCIS), also known as stage 0 breast cancer, is over 98 percent.