Results of mixed photon-electron therapy in early glottic cancer

The results of mixed photo-electron therapy in 85 patients with early glottic cancer are presented. 85% of the patients were in poor general condition. All patients received radiation to a single lateral laryngeal field of 6 X 6 to 8 X 8 cm2 and the dose of 64 Gy to 70 Gy in 6 to 7 weeks. Half of the dose was delivered with a telecobalt unit and half with 15 MeV electrons. 78.8% patients (67/85) survived without evidence of malignancy for three years after the radiation therapy alone, and 5 patients survived after salvage surgery. The overall crude survival rate was 84.7% at three years. Three-year survival rates without evidence of malignancy were 91.5% in stage I and 69.2% in stage II