This is an open label single-dose study to be conducted in 18 evaluable patients with recurrent high-grade glioma. Patient will undergone debulking surgery and ventricular access device placement into the tumor cavity for administration of 131I-TM-601. High-grade glioma includes glioblastoma multiforme, anaplastic astrocytoma, anaplastic oligo-astrocytoma and gliosarcoma. The amount of 131I will remain constant. Three doses of TM-601 will be administered using a dose escalating scheme.