A 67 year old woman with a right adrenal pheochromocytoma was admitted to hospital with decompensated diabetes. She developed clinical signs of myocardial infarction. Complementary investigations showed this to be an adrenergic cardiomyopathy. The radionuclide and angiographic investigations confirmed the ischemic origin of the lesions and the functional nature of the coronary insufficiency in this case of pheochromocytoma.