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Pheochromocytoma with echocardiographic features of obstructive hypertrophic cardiomyopathy. A case report
J L Jacob1, L C da Silveira, C G de Freitas
1Instituto de Moléstias Cardiovasculares de São José do Rio Preto, Brazil.
Insights
Pheochromocytoma can mimic hypertrophic cardiomyopathy on echocardiograms due to excess catecholamines. Tumor resection normalized echocardiographic findings, highlighting the link between adrenal tumors and cardiac changes.
Area of Science:
- Cardiology
- Endocrinology
- Oncology
Background:
- Pheochromocytoma, a rare adrenal tumor, excessively produces catecholamines.
- Catecholamine excess can cause cardiovascular complications, including hypertension and arrhythmias.
- Obstructive hypertrophic cardiomyopathy is characterized by left ventricular outflow tract obstruction.
Observation:
- A patient presented with echocardiographic findings suggestive of obstructive hypertrophic cardiomyopathy.
- Diagnostic imaging, including angiography and computed tomography, identified a pheochromocytoma and its vascular supply.
- Preoperative echocardiography revealed features mimicking obstructive hypertrophic cardiomyopathy.
Findings:
- The echocardiographic abnormalities regressed towards normalization one month after surgical resection of the pheochromocytoma.
- The study suggests that excessive catecholamine production by the pheochromocytoma was the likely cause of the observed cardiac changes.
- This case highlights a potential diagnostic challenge where a pheochromocytoma can present with cardiac manifestations.
Implications:
- Pheochromocytoma should be considered in the differential diagnosis of patients presenting with unexplained hypertrophic cardiomyopathy-like features.
- Early diagnosis and treatment of pheochromocytoma can lead to the reversal of cardiac abnormalities.
- This case underscores the significant impact of neuroendocrine tumors on cardiovascular health.
Abstract:
The authors report a case of pheochromocytoma in which the echocardiographic features suggested obstructive hypertrophic cardiomyopathy. The angiographic study and the computed tomography showed the tumor and its arterial supply. One month after resection of the tumor the echocardiographic features showed a tendency to normalization. The preoperative echocardiographic aspect was probably due to excessive production of catecholamines by the tumor.