Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post median sternotomy . Left - sided pacer device is grossly stable in position . There is a moderate left pleural effusion with overlying atelectasis , left base consolidation is not excluded . Similar pulmonary edema persists , possibly asymmetric on the left . No right pleural effusion is seen . There is no pneumothorax . Cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
Moderate left pleural effusion with overlying atelectasis , underlying consolidation not excluded . Similar pulmonary edema .