Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperexpanded . Diffuse interstitial thickening is re - demonstrated , likely reflecting chronic interstitial lung disease . There is increased opacification at the right lung base , which likely represents a developing pneumonia . Heart size is normal . The mediastinal and hilar contours are normal . The pulmonary vasculature is normal . No pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
1 . Opacification at the right lung base concerning for developing pneumonia . 2 . Hyperexpanded lungs with chronic interstitial thickening , likely representing interstitial lung disease .