Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are normally expanded . There are opacities in the right mid lung and left retrocardiac region , new since CT of ___ . There is no large pleural effusion or pneumothorax . The heart is mildly enlarged .
    OUTPUT:
    
Right middle lobe and left lower lobe opacities concerning for multifocal pneumonia versus aspiration pneumonitis .