[Risk to patients with latent or manifest hyperthyroidism through iodine-containing contrast media and drugs (author's transl)].

Severe iodine-induced hyperthyroidism occurred in 25 patients with, at the time not yet fully diagnosed thyroid function after administration of iodine-containing contrast media, disinfectants or drugs, in four of them precipitating a thyrotoxic crisis. As iodine-induced hyperthyroidism is often resistant to the usual antithyroid treatment, thyroid function should be checked whenever the use of iodine-containing contrast media is indicated.