Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval decrease in left pleural effusion related to thoracentesis . No pneumothorax . Increased opacity in the right lower lung could represent atelectasis , pneumonia , aspiration or hemorrhage . Stable mild cardiomegaly is chronic . Right effusion unchanged from yesterday .
    OUTPUT:
    
1 . Decrease in small to moderate left pleural effusion after thoracentesis with no pneumothorax . 2 . Increased opacity in right lower lung since yesterday could be atelectasis , pneumonia , aspiration or less likely hemorrhage .