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 . There is a new opacity in the right lower lobe concerning for pneumonia , superimposed on preexisting patchy medial right middle lobe opacification that appears more chronic , also comparing to ___ , although the lungs had been clear on earlier radiographs from ___ .
    OUTPUT:
    
Increasing right basilar opacity worrisome for pneumonia . Follow - up radiographs are recommended within eight weeks in order to ensure resolution . If opacification were to persist , then chest CT should then be considered .