Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . The mediastinal and hilar contours appear within normal limits . There are patchy opacities in both lower lungs , more extensive on the left than right , although nonspecific , compatible with aspiration . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Patchy lower lung opacities , greater on the left than right , which would be compatible with aspiration or pneumonia .