Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Extensive subcutaneous air has diminished compared to the prior exam . Interstitial edema , small right effusion and central pulmonary vascular engorgement are increased . In addition , increased opacity at the right lung base may be related to atelectasis , but developing infection is not excluded . Cardiomediastinal silhouette is stable .
    OUTPUT:
    
1 . Increased pulmonary edema . 2 . Increased right basilar opacity may be due to atelectasis , but developing infection is not excluded .