Left-Sided Pericardial Cyst Mimicking Acute Coronary Syndrome

Pericardial cysts are rare clinical entities mostly asymptomatic and detected incidentally. Albeit rare, many complications reported extend from cough dyspnea to sudden cardiac death. The case presented herein is the first large localized hemorrhagic pericardial cyst mimicking an acute coronary syndrome (ACS) with intense chest pain, precordial ST-segment elevation, elevated troponin. Following thorough investigations, this appeared be associated moderate effusion explaining myopericarditis as a cause of findings listed. After surgical excision, patient experienced relief his symptoms, Serial electrocardiograms (ECG) post-operative were normalized.