Each patient will receive only one injection although one of the first three patients might receive a second injection if the first injection volume was less than 25% of the tumor volume. A second injection can also be given to those patients who were stable after the first injection and develop a nodule of growth. If >250 mg BCNU total was injected, any repeat injection cannot be done for at least 6 weeks. The dose of DTI-015 will depend on the size of the patient's tumor. The dose level will be increased after the first 3 patients and again after the next 3 patients. After the treatment, the patient will remain in the hospital for 1 day.