This is precancer and is often seen adjacent to infiltrating cancer. It is only significant when there is a lot of it. Even then it does not indicate that the cancer is aggressive but rather that it may be harder to remove in its entirety. back to pathology report
Ductal carcinoma is a very common type of breast cancer in women. It comes in two forms: infiltrating ductal carcinoma (IDC), an invasive cell type; and ductal carcinoma in situ (DCIS), a noninvasive cancer.