NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 7,800 terms related to cancer and medicine.
Browse the dictionary by selecting a letter of the alphabet or by entering a cancer-related word or phrase in the search box.
- listen (uh-TA-meh-stayn)
- A substance that is being studied in the treatment of cancer. Atamestane blocks the production of the hormone estrogen in the body. It belongs to the family of drugs called antiestrogens.