Successful Treatment of a Giant Left Atrial Mass Stemming from Pulmonary Vein after Chemotherapy-radiotherapy Combination in a Patient with Lung Adenocarcinoma.

A 66-year-old male presented with fatigue, weakness, haemoptysis and severe dyspnoea for two weeks. On physical examination, heart rate was 80 beats/min, blood pressure was 110/80 mmHg and bilateral crepitant rales up to the mid zone of the lungs. Surface ECG showed sinus rhythm. Transthoracic echocardiography revealed moderate depression of left ventricular function (ejection fraction: 40%) and left atrial mass. To confirm the diagnosis, we also performed a transoesophageal echocardiography and demonstrated a lobulated mass with a diameter of 30x25 mm in the left atrium and compression of the mass to superior vena cava (Figure 1A, 1B). Cardiac magnetic resonance imaging (CMRI) confirmed the findings in the transoesophageal echocardiography (Figure 1C). Thoracic computed tomography demonstrated a mass with a diameter of 52x36 mm in the