Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the prior studies , lung volumes are significantly decreased , with bronchovascular crowding and accentuated heart size . Left basilar opacity is likely a combination of atelectasis and effusion . Significant amount of subcutaneous air is present throughout the bilateral thoracic soft tissues , postoperative in nature . The large right paratracheal lymph node is again seen , similarly to prior chest radiographs and the prior chest CT . No evidence of pneumothorax .
    OUTPUT:
    
1 . Severely decreased lung volumes , with bronchovascular crowding . Left basilar opacification is likely a combination of fluid and atelectasis . 2 . Diffuse subcutaneous emphysema in the postoperative setting .