Cardiac Paraganglioma Discovered Incidentally

Area of Science:

• Cardiology
• Endocrinology
• Oncology

Background:

• Paragangliomas are rare neuroendocrine tumors originating from neural crest cells in the autonomic system.
• Advances in imaging have increased the detection rates of these tumors.
• Cardiac paragangliomas pose diagnostic challenges due to potential asymptomatic presentation.

Observation:

• A 59-year-old man presented with an incidental diastolic murmur.
• Echocardiography and cardiac MRI revealed a large mass in the right ventricle's atrioventricular groove.
• Coronary angiography showed the mass was highly vascularized, and serologic tests revealed elevated epinephrine and dopamine levels.

Findings:

• DOTATATE-PET/CT confirmed the diagnosis of a cardiac paraganglioma.
• Cardiac paragangliomas can cause significant morbidity due to catecholamine secretion.
• These tumors have a rare but potential for malignancy.

Implications:

• Diagnosis requires a combination of serologic and advanced imaging techniques.
• Multidisciplinary evaluation is essential for effective management strategies.
• Further research is needed due to the paucity of evidence-based guidelines for cardiac paragangliomas.