Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The tip of the right PICC line projects over the upper right atrium . There is an unchanged left pleural effusion with overlying opacities . The previously noted consolidation at the right lung base has decreased . No pneumothorax identified . The size of the cardiomediastinal silhouette is within normal limits .
    OUTPUT:
    
Interval decrease in the opacities at the right lung base . No other significant interval change .