Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The moderate left pleural effusion has decreased in size . Persistent but slightly improved opacification within the left upper lobe is concerning for pneumonia , though asymmetric edema or atelectasis are possible . There is probably a small to moderate right pleural effusion . Increased interstitial markings at the right base are compatible with pulmonary vascular congestion and mild pulmonary edema . There is no pneumothorax .
    OUTPUT:
    
1 . Interval decrease in left pleural effusion , still moderate in size . 2 . Slightly improved persistent opacification of the left upper lobe , which is concerning for pneumonia . 3 . Persistent mild to moderate pulmonary vascular congestion and pulmonary edema .