NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 8,106 terms related to cancer and medicine.

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first-line therapy
(... THAYR-uh-pee)
The first treatment given for a disease. It is often part of a standard set of treatments, such as surgery followed by chemotherapy and radiation. When used by itself, first-line therapy is the one accepted as the best treatment. If it doesn’t cure the disease or it causes severe side effects, other treatment may be added or used instead. Also called induction therapy, primary therapy, and primary treatment.