The process of apoptosis may be blocked in cancer cells. Atypical ductal hyperplasia (ADH): a proliferation of cells confined to the ductal-lobular space which has some but not all of the features ...

shedding light on ductal carcinoma in situ (DCIS), invasive ductal carcinoma, invasive lobular carcinoma, phyllodes tumor, Paget's disease of the breast, and angiosarcoma of the breast.