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  • Title: [Extra-adrenal pheochromocytoma simulating acute myocardial infarction].
    Author: Costa J, Brandão A, Correia A, Pereira MA, Basto L, Rodrigues P.
    Journal: Rev Port Cardiol; 1999 Nov; 18(11):1025-9. PubMed ID: 10608162.
    Abstract:
    The authors present the case of a 65 year-old female who was admitted to the emergency room with epigastric pain, headache, palpitations, nausea, vomiting and sweating. The laboratory tests performed showed elevation of CK and CK-MB and the ECG presented sinus tachycardia. T-wave inversion and prolonged QT interval. The echocardiogram was normal. The patient was admitted to the ICU and during the standard myocardial infarction treatment (including beta-blocker) a wide range of the arterial pressure (230/140 to 70/40 mm Hg) was registered. In view of these new data, the hypothesis of pheochromocytoma and catecholamine induced myocarditis was suggested and later confirmed by high levels of plasmatic and urinary catecholamines. The abdominal echography. CT and MRI showed a large retroperitonal and para-aortic mass. The administration of phenoxybenzamine (30 mg/day) led to the normalization of the ECG and arterial pressure and the respective clinical improvement. The anatomopathological exam, after surgical removal, confirmed our hypothesis. Sixteen months after the surgical procedure the patient is assymptomatic, with normal arterial pressure and normal levels of plasmatic and urinary catecholamines.
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