Pheochromocytomas are catecholamine-producing paragangliomas derived from the neural crest. Primary cardiac pheochromocytoma is extremely rare. We describe a case of cardiac pheochromocytoma involving both right and left atria in a middle-aged woman. Metaiodobenzylguanidine (MIBG) scintiscan results were normal, but results from an octreotide scan were abnormal. The tumor was successfully resected using cardiopulmonary bypass (CPB).