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Dictionary of Cancer Terms
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central nervous system prophylaxis (SEN-trul NER-vus SIS-tem pro-fih-LAK-sis)

 Chemotherapy or radiation therapy given to the central nervous system (CNS) as a preventive treatment. It kills cancer cells that may be in the brain and spinal cord, even though no cancer has been detected there. Also called CNS prophylaxis, central nervous system sanctuary therapy, and CNS sanctuary therapy.

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