Permanent iodine-125 implants for recurrent GBM result in survival comparable with that described in previous reports on temporary implants, but with less morbidity. Results are most favorable for patients who are younger than 60 years, and who undergo gross total resection. Despite this aggressive treatment, most patients die as a consequence of locally recurrent disease.
The use of adjunct therapy combining BCNU wafers and permanent 125I seeds resulted in survival that compares favorably with data from similar studies performed in patients with recurrent GBM. The incidence of brain necrosis appeared to be higher than that expected with either treatment alone, although the necrosis was manageable and did not affect survival. This novel approach warrants further investigation in recurrent and newly diagnosed GBM.
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