Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . Small left pleural effusion has increased in size compared to the prior exam . The hilar and mediastinal contours are stable . The lungs are otherwise clear without evidence of focal consolidations concerning for pneumonia . There is mild left basilar atelectasis . Left - sided pacer leads are in appropriate position . The visualized osseous structures are unremarkable .
    OUTPUT:
    
Interval increase in a small left pleural effusion with adjacent atelectasis .