Left Main Stem Compression by Intrapericardial Paraganglioma Associated With Succinate Dehydrogenase Mutation

Area of Science:

• Cardiology
• Oncology
• Genetics

Background:

• Paragangliomas are rare tumors originating from extra-adrenal chromaffin cells.
• Primary cardiac paragangliomas are exceptionally uncommon, posing diagnostic and therapeutic challenges.

Purpose of the Study:

• To report a rare case of primary cardiac paraganglioma.
• To highlight the clinical presentation and diagnostic findings.
• To investigate potential genetic factors associated with the tumor.

Main Methods:

• Case presentation of a 38-year-old woman with dyspnea and chest pain.
• Diagnostic imaging to characterize the intrapericardial mass.
• Surgical resection and histopathological confirmation.
• Genetic testing for mutations in succinate dehydrogenase genes.

Main Results:

• A large intrapericardial mass encasing the left main coronary artery was identified.
• The mass was confirmed as a primary cardiac paraganglioma.
• A mutation in the succinate dehydrogenase A gene was detected, indicating a potential genetic predisposition.

Conclusions:

• Primary cardiac paragangliomas are rare but critical diagnoses.
• Encasing major coronary arteries presents significant surgical risks.
• Genetic analysis, particularly for succinate dehydrogenase mutations, is important for understanding predisposition.