Neutron irradiation will first be planned based on the available tumor imaging examinations, following which the head and body position will be determined for irradiation, and head fixation will be prepared and tested. On the irradiation day 400 mg/m2 L-BPA-F will be infused intravenously over 2 hours. Cetuximab doses will be administered following completion of BNCT. The cetuximab doses will be escalated in cohorts of 3 patients.