[Iodinated contrast medium in patients with thyroid disorders].

[Iodinated contrast medium in patients with thyroid disorders]. Radiologe. 2019 Apr 04;: Authors: Leidig-Bruckner G Abstract BACKGROUND: Adequate intake of iodine is essential for normal thyroid function. However, sudden exposure to high amounts of iodine may cause thyroid dysfunction. AIM: The aims of this paper are to summarize the literature on the effects of iodinated contrast medium (CM) on thyroid function, the risk to develop CM-induced hyper- and hypothyroidism, and to describe procedures for clinical practice regarding diagnosis, prevention, and treatment of CM-induced hyperthyroidism. RESULTS: The occurrence of CM-induced hyperthyroidism is very rare (<0.5%). In Germany, thyroid function is commonly assessed with laboratory tests (TSH determination) before the use of iodinated CM. Older patients (>60 years) with autonomous thyroid and concomitant cardiac diseases are at particular risk of developing hyperthyroidism. The main focus of prevention is to identify patients at risk of developing iodine-induced hyperthyroidism and carry out further thyroid diagnostic procedures prior to CM use. In these patients, prophylaxis with perchlorate and/or thionamides is recommended or alternatively careful monitoring of the patients after use of CM. In patients with overt hyperthyroidism, the use of CM is contraindicated. Iodine-induced hypothyroidism is predominantly found in regions with sufficient iodine supply ...
Source: Der Radiologe - Category: Radiology Authors: Tags: Radiologe Source Type: research