Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to prior radiograph from ___ , lung volumes are low which accentuate the cardiac silhouette and bronchovascular structures . There has been interval increase of a right - sided pleural effusion . There is no effusion on the left . Lungs are otherwise clear . Again seen is a tiny density in the left chest wall , projecting over the left mid lung , which corresponds to a metallic artifact seen on prior chest CT examination .
    OUTPUT:
    
Interval increase of right - sided pleural effusion .