central nervous system sanctuary therapy (SEN-trul NER-vus SIS-tem SANK-choo-WAYR-ee THAYR-uh-pee)
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 sanctuary therapy, central nervous system prophylaxis, and CNS prophylaxis.