Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mild to moderately enlarged . The mediastinal and hilar contours appear unchanged . There is a mild interstitial abnormality suggestive of mild congestion , but improved since the prior examination . There is no definite pleural effusion or pneumothorax , although it is noted that the left lung apex is partly obscured by chin flexion . Patchy basilar opacities have considerably improved , and although there are still probably small pleural effusions on each side , these appear smaller . Mild rightward convex curvature is centered at the thoracolumbar junction . Surgical clips project over the right upper quadrant .
    OUTPUT:
    
Findings suggesting mild vascular congestion , with small pleural effusions , but considerably improved .