Myocarditis Masquerade: A Rare Cardiac Presentation of Acute Myeloid Leukemia

Introduction: Acute myocarditis is a potentially life-threatening illness characterized by myocardial inflammation. While viruses are commonly implicated, etiologies are numerous. We present a previously healthy teenager diagnosed clinically with acute myocarditis ultimately found to have acute myeloid leukemia (AML). Case Description: A previously healthy 13 yo male presented with 1 day of chest pain and dyspnea and 4 days of headache, neck pain, malaise, and anorexia. On presentation, he was afebrile, persistently tachycardic (up to 133 bpm) with normal blood pressure and perfusion. Labs (Table 1) were notable for elevated troponin-I, CRP, LDH, uric acid and haptoglobin with …