Abstract
Introduction: Regional pericarditis is a rare clinical entity that may mimic myocardial infarction (MI) and occurs most frequently after myocardial injury. We describe a unique case of regional pericarditis secondary to esophagopleural fistula (EPF) in a patient presenting to the catheterization lab for suspected ST-segment MI. Results: A 75-year-old man with non-small cell lung cancer presented with hypotension, weakness, dyspnea, and chest pain. The initial electrocardiogram (ECG: Figure 1) revealed normal sinus rhythm with inferior lead ST- segment elevations, a chest X-ray showed a left pleural effusion, and troponin I was <0.01 ng/ml. The patient underwent emergent coronary angiography showing no evidence of obstructive coronary disease. Subsequently, the patient reported palpitations and new onset dysphagia. An ECG revealed atrial fibrillation with rapid ventricular response. A barium esophagram (Figure 2) was performed to evaluate the dysphagia and revealed the presence of an EPF with fluid collection adjacent to the inferior heart border. The patient was treated for pericarditis with colchicine and definitive treatment with esophageal stenting was performed. Conclusions: We describe a case of regional pericarditis secondary to EPF masquerading as inferior MI. Given the prevalence and severity of MI, remaining cognizant of its mimickers such as regional pericarditis is important in clinical practice. This case report highlights the utility of maintaining a broad differential and performing a thorough history and physical both at initial presentation and when new information challenges the initial diagnosis.
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