Meaning of primary treatment: Initial treatment used to reduce a cancer.

Definition of primary treatment

Initial treatment used to reduce a cancer. Primary treatment is followed by other treatments, such as chemotherapy, radiation therapy, and hormone therapy to get rid of cancer that remains. Also called first-line therapy, induction therapy, and primary therapy.

For learning, not diagnosis. This glossary provides general educational information and is not a substitute for advice from a qualified healthcare professional. If you may be experiencing a medical emergency, contact local emergency services.