Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no focal consolidation or pneumothorax . A small left pleural effusion and left lower lobe linear atelectasis is unchanged since the prior study . Unchanged left upper lobe linear atelectasis . Interval improvement in right lower lobe atelectasis . The cardiomediastinal silhouette is unchanged . Median sternotomy in a wires are intact . The imaged upper abdomen is unremarkable . Unchanged right sixth and seventh rib fractures .
    OUTPUT:
    
Stable small left pleural effusion with underlying left lower lobe linear atelectasis . Improved right lower and unchanged left upper lobe linear atelectasis .