Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: On a background of minimal chronic congestive heart failure and low lung volumes bibasilar opacifications again noted , left greater than right with increased opacification noted in the posterior costophrenic angle on the lateral view concerning for infectious process . No pleural effusion or pneumothorax . Minimal rightward deviation of trachea may be due to goiter . Please correlate clinically .
    OUTPUT:
    
Increased retrocardiac opacification likely represents developing left lower lung infectious process .