Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is top normal . The hilar and mediastinal contours are normal . There is a subtle opacity in the right middle lobe . There is also mild left basilar opacity secondary to atelectasis or pneumonia . There are no large pleural effusions . There is no evidence of a pneumothorax . The visualized osseous structures are unremarkable .
    OUTPUT:
    
Subtle opacity in the right middle lobe is concerning for a right middle lobe pneumonia .