Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The bilateral mid to lower lung hazy opacities , right more than left , have improved . Bilateral lower lobe atelectasis is unchanged . Bilateral lower lobe pleural effusion is unchanged . No new consolidation . Moderate cardiomegaly and mediastinal contour are unchanged .
    OUTPUT:
    
Improved bilateral mid to lower lung opacities . Otherwise no other significant changes .