title: Life-threatening cardiac manifestations of pheochromocytoma.
abstract: Pheochromocytoma is a catecholamine-secreting tumor of the adrenal glands, usually with benign manifestations, whose typical clinical presentation includes the triad of headache, palpitations and diaphoresis. However, a wide range of signs and symptoms may be present. In the cardiovascular system, the most common signs are labile hypertension and sinus tachycardia. Systolic heart failure and ST-segment deviations mimicking myocardial infarction have also been reported, as well as QT interval prolongation and, rarely, ventricular tachycardia. We describe a challenging diagnosis of pheochromocytoma with many cardiovascular manifestations, which could have been missed due to the absence of typical symptoms.
authors.affiliation: Department of Clinical Cardiac Electrophysiology, Centro de Estudos em Arritmia Cardíaca, SMDB Conj. 16 Lote 5 Cs A, Brasilia-DF 71680-160, Brazil.
authors.forename: Luiz R
authors.initials: LR
authors.lastname: Leite
authors.forename: Paula G
authors.initials: PG
authors.lastname: Macedo
authors.forename: Simone N
authors.initials: SN
authors.lastname: Santos
authors.forename: Luiz
authors.initials: L
authors.lastname: Quaglia
authors.forename: Cezar E
authors.initials: CE
authors.lastname: Mesas
authors.forename: Angelo
authors.initials: A
authors.lastname: De Paola