[2 cases of cardiac disorders due to hyperthyroidism in young adults].
D000328:Adult; D001281:Atrial Fibrillation / Q000209:etiology*; D004562:Electrocardiography; D006333:Heart Failure / Q000209:etiology*; D006801:Humans; D006980:Hyperthyroidism / Q000150:complications*; D008297:Male; D010490:Pericardial Effusion / Q000209:etiology*; D013902:Radiography, Thoracic; D014463:Ultrasonography