Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Both lung volumes are low . Tracheostomy tube is in standard position . Increased retrocardiac density reflecting left lower lung atelectasis is unchanged since yesterday . Mild right basal atelectasis has improved . Bilateral small pleural effusions appear similar . No new lung opacities of concern moderately enlarged heart size , mediastinal and hilar contours are unchanged .
    OUTPUT:
    
Over last 24 hours increased retrocardiac opacity reflecting consolidation and / or atelectasis is unchanged whereas improved right lower lung opacity is atelectasis . Presumed bilateral small pleural effusions are stable .