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external-beam radiation therapy (...RAY-dee-AY-shun THAYR-uh-pee)

 A type of radiation therapy that uses a machine to aim high-energy rays at the cancer from outside of the body. Also called external radiation therapy.

Previous Definitions:experimental, experimental drug, exploratory surgery, extensive-stage small cell lung cancer, external radiation therapy
Next Definitions:extracorporeal photopheresis, extracranial, extracranial germ cell tumor, extract, extragonadal germ cell tumor

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