[Off-pump Resection of Dopamine-secreting Cardiac Paraganglioma].

Abstract

Dopamine-secreting paragangliomas is known to be rare. The average annual incidence rate was reported 0.8 per 100,000 person-years. Approximately 1 to 2% of paragangliomas occur in the chest. We describe a patient with a large dopamine-secreting cardiac paraganglioma, right adrenal tumor and carotid body tumor. A 26-year-old man with progressive exertional dyspnea was referred to our hospital for further management of multiple paragangliomas. Positron emission tomography (PET) and PET-computed tomography (CT) detected those three legions. The diameter of cardiac paraganglioma was over 45 mm and was biggest among three tumors. Firstly, therefore, we planned cardiac paraganglioma resection. Through left lateral thoracotomy in the 4th intercostal space via, cardiac paraganglioma was resected under cardiopulmonary bypass and beating heart. Postoperative course was uneventful. Tumor cells were positive for synaptophysin and chromogranin A. Free metanephrines in the serum and urinary fractionated metanephrines normalized after cardiac surgery while the other two tumors remained untreated.