腫瘍との鑑別が困難であった右房内血栓の1例

Right Atrial Thrombus which was Difficult to Differentiate from Tumor；Report of a Case

はじめに　右房内腫瘤は，腫瘍や血栓，菌塊の鑑別が困難なことも多い．術前に鑑別困難であった右房内腫瘤の1例を経験したので，若干の文献的考察を加えて報告する．

We report a case of a 79-year-old woman with a right atrial mass. She had a history of hypertension, idiopathic thrombocytopenic purpura, and chronic atrial fibrillation. Computed tomography and transthoracic echocardiography showed a 31×31 mm mass in the right atrium. Though it was considered to be a thrombus at first, it did not become smaller despite anticoagulation, and tumor was suspected. To prevent onset of pulmonary embolism, she underwent surgery and the mass was removed. Pathological examination confirmed that it was a thrombus. Her postoperative course was uneventful.