| Summary: | Pheochromocytoma is a rare catecholamine-secreting tumor with highly variable clinical presentations. We herein report a patient who presented to the emergency department with precordia pain, elevated myocardial enzymes, T-wave inversions on electrocardiogram and segmental ventricular wall motion abnormalities on echocardiography, which is normally managed as suspected acute coronary syndrome (ACS). However, the urgent coronary angiography showed normal coronary arteries. During his hospital stay, a sudden increase in blood pressure allowed us to suspect a pheochromocytoma, which was confirmed by elevated levels of catecholamines and by the finding of a right adrenal mass on magnetic resonance imaging. The tumor was successfully excised and the patient is now asymptomatic. This case illustrates that pheochromocytoma can present as a mimic of ACS but this is often difficult to diagnose at first glance and often misleads clinicians into making an incorrect diagnosis. In addition, clinicians should be familiar with clinical manifestations of pheochromocytoma, which can help raise clinical suspicion and facilitate the early diagnosis and treatment of pheochromocytoma.
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