15 September 2026
: Case report 
Pheochromocytoma Masquerading as Acute Coronary Syndrome Complicated by Cardiogenic Shock: A CARE-Compliant Case Report
Unusual clinical course, Challenging differential diagnosis
Songyan Zhang BC 1, Ying Cui EF 1, Shucheng Li ADG 1*DOI: 10.12659/AJCR.952994
Am J Case Rep 2026; 27:e952994
Figure 1 Electrocardiographic findings(A) Initial admission ECG demonstrating sinus tachycardia (131 bpm), abnormal Q waves in leads V1–V2, left axis deviation, poor R-wave progression, and T-wave abnormalities, suggestive of myocardial ischemia or injury. (B) ECG obtained during the second admission showing sinus rhythm (73 bpm), P-wave broadening, and a prolonged QT interval (474 ms), consistent with ongoing electrical instability in the context of catecholamine excess.