Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart continues to be moderately enlarged with mild interstitial edema . The right pleural effusion has increased since ___ , and lung volumes are low with bibasilar atelectasis . The right lower lung has a heterogeneous opacity . Median sternotomy wires are intact .
    OUTPUT:
    
Unchanged interstitial edema and bibasilar atelectasis . Increased right pleural effusion with right lower lung opacity concerning for possible pneumonia .