Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are normal . There is no pneumothorax or large pleural effusion . The lungs are well - expanded , and a new small opacity at the right lung base medially is concerning for an infectious process . The upper abdomen is unremarkable .
    OUTPUT:
    
New right lower lobe opacity , compatible with pneumonia .