title: Recurrent thyrotoxicosis after I-131 induced hypothyroidism.
abstract: The first clinically and biochemically documented case of recurrent thyrotoxicosis after I-131 induced hypothyroidism in a patient with Graves' disease is reported. Two months after the administration of 9.2 mCi of I-131, the subject developed hypothyroidism. One month later, the patient became euthyroid. Then, nine months following ablation, the patient again developed thyrotoxicosis. A second dose of I-131 of 12.5 mCi was required to finally produce permanent hypothyroidism. This case illustrates the recurrence of hypothyroidism after what had seemed to have been adequate I-131 radiation.
mesh_terms: D000328:Adult; D006111:Graves Disease / Q000532:radiotherapy*; D006801:Humans; D006980:Hyperthyroidism / Q000209:etiology*; D007037:Hypothyroidism / Q000209:etiology*; D007457:Iodine Radioisotopes / Q000627:therapeutic use*; D008297:Male; D012008:Recurrence
chemical_list: D007457:Iodine Radioisotopes