OUTLINE: This is an open label, multicenter study. Patients undergo surgical resection of the tumor followed by surgical placement of the GliaSite device in the resection cavity. One to 2 weeks after surgery, patients receive brachytherapy consisting of an infusion of iodine I-125. The I-125 solution is removed and collected 5-7 days later. The device is surgically removed within 24 hours. Patients are followed at 24 hours, 14 days, and 1 year post device removal.