A chemotherapy regimen consisting of cyclophosphamide, doxorubicin hydrochloride (Adriamycin), and fluorouracil, which may be used in the adjuvant setting for the treatment of nonmetastatic breast cancer or alone for the treatment of metastatic breast cancer. or A metallic element that occurs naturally in tiny amounts in air, water, soil, and food. It is a byproduct of zinc refining and is used to make batteries, pigments, plastics, alloys, and electroplate. It is also found in tobacco and tobacco smoke. Exposure to high levels of cadmium may cause certain cancers and other health problems.