Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are within normal limits . There is tortuosity of the descending aorta . The lungs are hyper expanded and there is flattening of the diaphragms , likely related to chronic lung disease . There is an area of increased opacity at the right lung base which is concerning for an infectious process . There is no pneumothorax or pleural effusion .
    OUTPUT:
    
Increased opacity at right lung base concerning for pneumonia . Short interval followup is recommended after treatment to document resolution .