Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate mildly increased opacity in the right infrahilar region , with a possible corresponding opacity on lateral view . This may represent atelectasis , but pneumonia in the right clinical setting can not be excluded . There is no pleural effusion or pneumothorax . The visualized upper abdomen is unremarkable .
    OUTPUT:
    
Slightly increased opacity in the right infrahilar region with a corresponding opacity on lateral view may represent atelectasis , but pneumonia can not be excluded in the right clinical setting .