[Iodine-induced hyperthyroidism due to contrast media (author's transl)].

A prospective study in an area with endemic goitre showed 18 patients (15.1%) out of 119 investigated with iodine containing contrast media to be hyperthyroid after 28 days. Oral cholecystography led to the highest (27.9%) and infusion urography to the lowest (5.3%) rate of hyperthyroidism. Determination of the serum concentration of thyroxine, triiodothyronine, basal and stimulated thyrotropine is not a suitable method to detect the risk for hormonally euthyroid patients before a contrast media investigation.