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Treatment results of epilaryngeal cancer are rarely individualized in the world literature. For this purpose, we have reviewed the records of 167 patients with squamous cell carcinoma of the lateral epilarynx who received radical radiotherapy at the Institut Curie on a megavoltage unit, between 1959-1975. Two-thirds of the lesions were located at the junction of the ary- and pharyngo-epiglottic folds and lateral border of the epiglottis. Forty-four percent of patients had advanced primary lesions (T3, T4) and over 50% had palpable neck nodes at the time of presentation. The absolute survival for the entire patient population at 3 and 5 years was 44% and 32%. Local control for T1 and T2 tumors at 3 years was about 80%. Survival at 5 years for the N0 Stage patient was 40%, whereas it was about 20% for those with clinically palpable nodes. Patients with exophytic tumors and lesions which regressed completely within 8 weeks following irradiation had a significantly better 3-year survival and local control than those with nonexophytic tumors and with tumors which had incompletely regressed after irradiation. Radiotherapy remains the treatment of choice for the small tumors (T1, T2) but the association of radical surgery with pre- or postoperative radiotherapy should be considered for advanced disease.