[Treatment of Grave's disease by radio iodine. Observation of 277 patients (author's transl)].

277 patients treated by radio iodine for Graves' disease were observed during a one to twenty three years period. 24 % relapse, always during the first three years. Hypothyroidism is ineluctable : 20 % from the first year and 3,4 % more each year. Goiter increases the delay for hypothyroidism occurrence. There is no linkage between hypothyroidism and radio iodine dose. Radio iodine does not cure graves' disease but give a "non hypo-non hyper" status, before secondary hypothyroidism.