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Malignant thyroid tumors after iodine-131 therapy

Journal Article · · New Engl. J. Med.; (United States)
We studied the incidence of malignant thyroid tumors after /sup 131/l therapy in 2727 patients with hyperthyroidism and in 273 euthyroid patients with cardiac disease. The patients were all adults, with a mean age of 57 years. The /sup 131/l therapy was given between 1951 and 1965. The mean follow-up period was 13 years for the hyperthyroid patients (15 years for the 85 per cent surviving for more than five years) and six years for the cardiac patients (12 years for the 41 per cent surviving for more than five years). The incidence of malignant thyroid tumors was based on a search of the Swedish Cancer Registry for the occurrence of such tumors in any of the 3000 patients. At present there is no increased incidence of malignant thyroid tumors after /sup 131/l therapy (four cases observed versus 3.2 cases expected).
OSTI ID:
5059496
Journal Information:
New Engl. J. Med.; (United States), Journal Name: New Engl. J. Med.; (United States) Vol. 303:4; ISSN NEJMA
Country of Publication:
United States
Language:
English