Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . The mediastinal and hilar contours appear within normal limits . There is no pleural effusion or pneumothorax extensive opacity in the medial right lower lobe is most suggestive of pneumonia . Elsewhere , the lungs appear clear .
    OUTPUT:
    
Findings suggest pneumonia in the right lower lobe . Follow - up radiographs are recommended to show resolution in ___ weeks .