Salvage surgery following irradiation with different fractionation regimes in the treatment of carcinoma of the laryngo pharynx: experience gained from a British Institute of Radiology study. 
The 10-year follow-up of patients in a clinical trial involving the comparison of treatment by three fractions per week versus five fractions per week in radiotherapy of squamous carcinoma of the larynx and hypopharynx has now been completed.  The trial involved an intake of 734 patients between 1966 and 1975.  No statistically significant differences have been found between the two trial arms in terms of overall survival, age corrected survival, local recurrence, laryngectomy-free rates or effects on the normal tissues.  Local recurrence was found in 320 of the 713 evaluable patients (45 per cent).  Salvage laryngectomy was performed in 151 of the 320 patients with recurrence (47 per cent).  Survival at 10 years for all node negative patients was 50 per cent in those patients without primary recurrence, compared with 40 per cent in those undergoing salvage laryngectomy.