Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The enteric tube has been removed . Sternotomy wires are intact and aligned . A right - sided dialysis catheter terminates in the upper right atrium . The patient has had prior left lung wedge resection with stable volume loss and elevation of the left hemidiaphragm . Colonic interposition with mildly distended air-filled loops of bowel are re-demonstrated in the left upper quadrant . Right perihilar airspace opacities are slightly more prominent . Left basilar subsegmental atelectasis has increased . Diffuse reticular nodular interstitial opacities are not appreciably changed .
    OUTPUT:
    
Increased right perihilar airspace opacification is worrisome for new edema , aspiration or infection . Increased left basilar subsegmental atelectasis . The background interstitial abnormality is not appreciably changed since ___ , but is substantially improved since ___ .