A second type ductal carcinoma in situ (DCIS), a noninvasive, potentially malignant, neoplasm that is still confined to the milk ducts (lactiferous ducts), where breast cancer most often originates.
A second type ductal carcinoma in situ (DCIS), precursor to cancer but not cancer yet. It is still confined to the milk ducts (lactiferous ducts), where breast cancer most often originates.