Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Slight interval improvement in the interstitial opacities , asymmetrically more pronounced in the right lung . Background lower lobe interstitial opacities are unchanged . The cardiomediastinal contours are stable in appearance . Small left - sided pleural effusion . The right - sided PICC terminates at the cavoatrial junction .
    OUTPUT:
    
Interval improvement in the asymmetric interstitial opacities throughout the right lung . Small left pleural effusion .