[Tumour in left atrium diagnosed 6 years after ablation of pulmonary vein ostia and inferior right atrial isthmus: thrombus or myxoma?].

We present a case of the left atrial myxoma 6 years after atrial fibrillation ablation. The initial diagnosis of the mass revealed on echocardiography was a thrombus. Failure of anticoagulant treatment and transesophageal echocardiography led to diagnosis of myxoma, confirmed intraoperatively and histologically.