Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours are normal . Subtle ill - defined patchy opacity is noted within the right lower lobe concerning for an area of developing infection . Left lung is clear . No pleural effusion or pneumothorax is present . There are no acute osseous abnormalities .
    OUTPUT:
    
Subtle ill - defined opacity within the right lung base concerning for an area of developing infection .