Before revision: Prophylactic cranial irradiation (PCI) or prophylactic cranial radiotherapy (PCRT) is a technique used to combat the occurrence of metastasis to the brain in highly aggressive cancers that commonly metastasize to brain, most notably small-cell lung cancer.
After revision: Prophylactic cranial irradiation (PCI) is a technique used to combat the occurrence of metastasis to the brain in highly aggressive cancers that commonly metastasize to brain, most notably small-cell lung cancer.