NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 8,229 terms related to cancer and medicine.

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TBI
A type of radiation therapy that is given to the entire body. TBI is often used with high-dose anticancer drugs to help prepare a patient for a stem cell transplant. It is done to kill any cancer cells that are left in the body and helps make room in the patient’s bone marrow for new blood stem cells to grow. TBI may also help prevent the body’s immune system from rejecting the transplanted stem cells. Also called total-body irradiation.