SEVERE CORONARY VASOSPASM ASSOCIATED WITH HYPERTHYROIDISM CAUSING MYOCARDIAL-INFARCTION

A 48 year old woman presented with angina after an anterior myocardial infarction and was found to be hyperthyroid. Coronary angiography sho wed a stenosis of the left coronary os and a long, severe stenosis of the left anterior descending artery which was partially relieved by gl yceryl trinitrate. Three months later, after radioactive iodine treatm ent had rendered her euthyroid, repeat coronary angiography showed ent irely normal coronary arteries. This unusual case establishes an assoc iation between hyperthyroidism and coronary vasospasm resulting in myo cardial infarction.