Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate left - sided pleural effusion given for differences in technique is minimally decreased . Multifocal opacities have substantially improved , can be treated infection . Heart size is top normal . No pneumothorax . Nasogastric tube tip is in the body of the stomach . The bones appear dense , stable in appearance .
    OUTPUT:
    
Moderate left - sided pleural effusion . Multifocal opacities have substantially improved , can be treated infection .