Multiple extra-adrenal paragangliomas associated with catecholamine cardiomyopathy

Area of Science:

• Endocrinology
• Cardiology
• Oncology

Background:

• Extra-adrenal paragangliomas are rare neuroendocrine tumors.
• Dilated cardiomyopathy is a serious cardiac condition characterized by left ventricular enlargement and dysfunction.

Observation:

• A patient presented with multiple extra-adrenal paragangliomas and clinical manifestations of dilated cardiomyopathy.
• Despite excessive catecholamine secretion from the tumors, hypertension was not a prominent clinical feature.

Findings:

• Surgical resection of the paragangliomas was performed.
• Post-operative echocardiography revealed no regression of the dilated cardiomyopathy.
• The patient ultimately died due to left ventricular failure.

Implications:

• This case highlights a potential, albeit rare, association between extra-adrenal paragangliomas and dilated cardiomyopathy.
• It suggests that catecholamine excess from these tumors may contribute to cardiac remodeling independent of significant hypertension.
• The findings underscore the critical need for early diagnosis and management of paragangliomas to prevent irreversible cardiac damage.