A 34-year-old woman was admitted with a history of syncope and a mass was detected in the right atrium (RA) by transthoracic echocardiography (TTE). Preoperative chest computed tomography (CT) also demonstrated an RA tumor measuring 4×3 cm. We performed resection of the RA tumor under cardiopulmonary bypass. Histopathological findings showed that the tumor was an angiomyolipoma. It is well known that angiomyolipomas are most frequently found in the kidney and are associated with tuberous scleroses. There was no evidence of tuberous sclerosis in this case. Primary tumors of the heart are rare. However, there have been a few intracardiac angiomyolipomas reported previously.

Primary cardiac fibroelastoma is a relatively rare tumor and is often detected incidentally by echocardiography. We report a case of multiple fibroelastomas that were found incidentally by follow-up echocardiography for hypertrophic cardiomyopathy and were treated with valve-sparing excision. The patient was a 71-year-old man, in whom a 10-mm tumor on the ventricular septum below the right coronary cusp and 3-mm tumors on the left ventricular side of the left and right coronary cusps were detected. Although he had no symptoms, because the tumors were mobile, surgery was performed for preventing embolization and making a definitive diagnosis. The tumor on the ventricular septum was excised together with the surrounding endocardium and part of the myocardium. The tumors on the valve leaflets were excised with the aortic valve cusps spared. Histopathologically, all the tumors were fibroelastomas. The postoperative course was uneventful.