The Use of Tc-Methoxy-isobutyl-isonitrile (sestaMIBI) Uptake on Scintigraphy (-STS) in Amiodarone-Induced Thyrotoxicosis: Case Series and Review of the Literature.

Amiodarone is a class III antiarrhythmic drug, used by cardiologists to treat arrhythmia including atrial fibrillation (A fib) and ventricular fibrillation. However, amiodarone is associated with endocrine dysfunction including both hypo- and hyperthyroidism. In the literature, two types of amiodarone-induced thyrotoxicosis (AIT) were described: AIT-1 and AIT-2.