A 26-year-old @entity1 presenting symptoms of rapid progressive @entity712 consulted with our hospital. Two-dimensional echocardiography showed a large mass in the left atrium (LA) and severe @entity120 . Emergent operation was performed because of hemodynamic reason and the risk of @entity887 . The @entity5 (7 x 6 x 3 cm) which was lobulated and had a smooth surface was arising from posterior wall of LA extending into the ostium of right lower pulmonary vein. The portion of @entity5 located was excised. The defect was reconstructed by @entity291 pericardium. Postoperative histopathological diagnosis was @entity1822 . Hemodynamics recovered after surgical treatment and there were no problems for 5 months. However, @entity5 recurrence in LA and pulmonary @entity3 was found 5.5 months after surgery. The @entity1 died two weeks later by progressive @entity712 . Primary @entity299 is extremely rare. The current world literature is reviewed with respect to this rare @entity5 .

[A case report of primary XXXX ].

@entity1 :: ('9606', 'Species') :: ['woman', 'patient'] @entity712 :: ('MESH:D006333', 'Disease') :: ['heart failure'] @entity5 :: ('MESH:D009369', 'Disease') :: ['tumor'] @entity120 :: ('MESH:D006976', 'Disease') :: ['pulmonary hypertension'] @entity887 :: ('MESH:D004617', 'Disease') :: ['embolism'] @entity1822 :: ('MESH:D007890', 'Disease') :: ['leiomyosarcoma'] @entity3 :: ('MESH:D009362', 'Disease') :: ['metastasis'] @entity299 :: ('MESH:D006331', 'Disease') :: ['cardiac leiomyosarcoma'] @entity291 :: ('9913', 'Species') :: ['bovine']
@entity299 :: (MESH:D006331,Disease) :: ['cardiac leiomyosarcoma']
