Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest demonstrate an area of increased opacification of the right lung base which may represent aspiration in the appropriate clinical setting . Superimposed right middle lobe infection can not be excluded . Cardiomediastinal and hilar contours are unchanged . There is no pneumothorax , or pleural effusion .
    OUTPUT:
    
Increased opacification of the right lung base , which may represent aspiration in the appropriate clinical setting . Superimposed right middle lobe infection can not be excluded .