NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,079 terms related to cancer and medicine.
- listen (4-hy-DROK-see-tuh-MOK-sih-FEN)
- A form of the drug tamoxifen that is made by the body after taking tamoxifen. It can also be made in the laboratory, and may help decrease breast density. A topical form of 4-hydroxytamoxifen is being studied in breast cancer screening.