Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval placement of a left pleural drain projecting over the left lung base . No pneumothorax identified . There are persisting left mid to lower lung zone airspace opacities as well as an underlying pleural effusion . The right lung demonstrates faint patchy opacities which may also reflect foci of pneumonia . The appearance of the cardiomediastinal silhouette is unchanged .
    OUTPUT:
    
Interval placement of a left pleural drain . No pneumothorax identified . Otherwise , overall unchanged appearance of the left lung . Patchy airspace opacities in the right lung may also reflect foci of pneumonia .