Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been considerable increase in opacity over the left hemi thorax , likely due to significant interval increase in left pleural effusion , underlying consolidation or disease progression not excluded . Small right pleural effusion persists . New pulmonary nodules seen on prior CT from ___ were better assessed on CT . Slight increase in opacity at the right lung base is nonspecific and could be due to disease progression , infection , aspiration . The left aspect of the cardiac silhouette is not well assessed due to the large left hemi thorax opacity , although grossly , likely stable .
    OUTPUT:
    
Interval significant increase in left hemi thorax opacity likely large left pleural effusion with overlying atelectasis . Underlying consolidation not excluded . Numerous bilateral pulmonary nodules better assessed on prior CT .