Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Chest , PA and lateral . There is a large left pleural effusion with collapse of the left lower lobe . The lungs are otherwise clear . Extent of cardiomegaly is undetermined due to effusion . There is no pneumothorax . A dual lead pacemaker is implanted over the left chest wall and the electrodes are intact . The there is no pulmonary edema .
    OUTPUT:
    
Large left pleural effusion with collapse of the left lower lobe .