Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Re - demonstrated is left infrahilar opacity consistent with chronic post treatment changes , with underlying volume loss and bronchiectasis , better characterized on prior CT . Increased bibasilar opacities are seen compared the prior study which may be due to infection , aspiration , disease progression not excluded . There is blunting of the right costophrenic angle which may be due to a trace pleural effusion . No pneumothorax is seen . Cardiac and mediastinal silhouettes are grossly stable .
    OUTPUT:
    
Increased bibasilar opacities as compared to the prior study , may be due to infection , aspiration , disease progression not excluded . Small right pleural effusion . Persistent left infrahilar opacity consistent with chronic posttreatment changes , with underlying volume loss and bronchiectasis , better characterized on prior CT .