Radiotherapy for primary and secondary brain tumors.

The past 2 years have seen publications of many studies on refinement of conventional radiotherapy using altered fractionation, sensitizers, and high-precision radiotherapy techniques, particularly in the form of stereotactic radiotherapy or radiosurgery. In less common tumors such as cranial germ cell tumors and primary central nervous system lymphoma, the trend towards exploring the role of chemotherapy continues. Mature clinical and experimental studies have also been published that provide detailed and clinically important information on the radiation tolerance of the spinal cord.