Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is at the upper limits of normal size . The mediastinal and hilar contours appear within normal limits . There is extensive opacification of the right lower lung , mostly involving the right lower lobe , which is largely consolidated perhaps with a right middle lobe component of opacification . The left lung remains clear . There is no definite pleural effusion or pneumothorax .
    OUTPUT:
    
Extensive opacification in the right lower lung most consistent with pneumonia . Follow - up radiographs are recommended within eight weeks in order to show resolution .