Radiation therapy is a method used to kill cancer cells. External beam radiation comes from a machine outside of the body. Short bursts of x-rays are aimed at certain places inside the body. It may be used:

  • Before a bone marrow transplant to kill leftover cancer in the bone marrow
  • To unclog the spleen—may be done to avoid removing the spleen
  • To treat areas like the spinal cord, brain, or testicles—to keep leukemia from spreading to these places
  • Ease symptoms caused by later stage leukemia

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