Dictionary of Cancer Terms
View in Spanish: Irradiación craneal profiláctica
Prophylactic cranial irradiation (PROH-fih-LAK-tik KRAY-nee-ul ir-RAY-dee-AY-shun)
Radiation therapy to the head to reduce the risk that cancer will spread to the brain.
Source: National Cancer Institute Dictionary of Cancer Terms, available at www.cancer.gov/dictionary.