A Case of Pheochromocytoma Presented with Life: Threatening Cardiogenic Shock

ABSTRACT

It is often possible to diagnose a pheochromocytoma only when a disastrous cardiac complication like a hypertensive crisis, episodes of unexpected left ventricular failure, myocarditis, arrhythmias, myocardial infarction and sudden death appears secondarily. We revealed that a patient who had been treated with a reversible left ventricular systolic dysfunction with cardiogenic indeed had a pheochromocytoma. Upon initial admission, a 35 years old man had upper respiratory tract infection and abdominal discomfort. Blood pressure was 140/90 mmHg and EKG showed transiently paroxysmal supraventricular tachycardia. Eight hours after admission, he appeared to be in cardiogenic shock. Echocardiography showed extensive global hypokinesia with severe left ventricular systolic dysfunction. Following conservative management he progressively recovered normal cardiac function although we did not discern the etiology of the left ventricular systolic dysfunction. He was readmitted six months later due to episodic headache and high blood pressure. Fortunately, due to the history of reversible left ventricular systolic dysfunction with cardiogenic shock, we were able to quickly assess him as having a pheochromocytoma. The laboratory data and radiological findings were compatible with this tumor, which was subsequently successfully removed through surgery. We suggest that the diagnosis of pheochromocytoma should be considered in young patients presenting with acute heart failure of non-specific origin.