Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left pleural effusion has increased in size and is now small to moderate . Adjacent increasing opacity in left lower lobe is associated with volume loss , with posterior displacement of the left major fissure . Small right pleural effusion is not appreciably changed from the prior study , and cardiomediastinal contours are also stable in appearance compared to the recent study .
    OUTPUT:
    
1 . Increasing left pleural effusion with adjacent left lower lobe opacity which likely reflects atelectasis in the setting of volume loss . However , coexisting pneumonia should be considered in the appropriate clinical setting . 2 . Persistent small right pleural effusion .