Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: ET tube , enteric tube , and left PICC are stable . Bilateral lower lung opacities are unchanged or slightly increased . No pneumothorax . Trace left pleural effusion . Cardiomediastinal and hilar contours are stable .
    OUTPUT:
    
Bibasilar opacities are unchanged or slightly increased and may represent developing pneumonia . Trace left pleural effusion .