Kaplan-Meier survival plots of patients with either newly diagnosed or recurrent tumors of the head and neck region, treated by Suzuki et al. with BNCT. A total of 68 patients were treated. One and 2 year OS rates were 43.1% and 24.2% respectively. Thirty-three patients had squamous cell carcinomas (53%), 20 had adenocarcinomas (32%) and 11 (18%) had malignant melanomas.