NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,197 terms related to cancer and medicine.
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- 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.