Interstitial brachytherapy for skull base tumors.

Over the past decade, great advances have been made in the development of technology and the techniques in the treatment of skull base tumors; however, because of the complexity of skull base anatomy, the morbidity, mortality, and recurrence rate following surgery for these tumors is high. Interstitial brachytherapy with 1-125 permanent implants is a viable alternative as a primary and second line treatment for these difficult tumors.