Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right IJ central line terminates in the distal SVC . Median sternotomy wires are intact . Cardiomediastinal silhouette is unchanged compared to the prior study , consistent with postoperative changes . Lung volumes are low . Dense consolidation along the right lung base and hyperlucency of the right upper lobe consistent with right lower lobe collapse . Increased retrocardiac opacity at the left lung base consistent with increased atelectasis . Subcutaneous emphysema extending from the neck to the lateral chest bilaterally is slightly improved compared to prior study . No pneumothorax is seen .
    OUTPUT:
    
1 . No pneumothorax . 2 . Right lower lobe collapse . 3 . Increased left lower lobe atelectasis . 4 . Subcutaneous air in the neck and chest bilaterally , slightly improved .