Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: APl view of the chest provided . Again seen is bilateral interstitial opacities , more confluent in the right lung base , overall slightly improved compared to prior study from 2 days ago . Heart size is mildly enlarged . Left sided PICC terminates in the low SVC .
    OUTPUT:
    
Interval slight improvement of bilateral interstitial opacities .