Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval increase in the left pleural effusion , now moderate in size . There is obscuration of the left hemidiaphragm which likely due to a combination of pleural effusion and compressive atelectasis , although developing consolidation can not be excluded . The right lung is clear . The cardiomediastinal silhouette and hilar contours are stable . There is no pneumothorax .
    OUTPUT:
    
Interval increase in left pleural effusion , now moderate with likely compressive atelectasis , although a developing consolidation can not be excluded at the left lung base .