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 patchy opacification in the right infrahilar region . Differential considerations include a focus of bronchopneumonia versus atelectasis , which could also be considered depending on clinical circumstances . Elsewhere , the lungs appear clear . There is no evidence for congestive heart failure . There is no pleural effusion or pneumothorax . Bony structures are unremarkable .
    OUTPUT:
    
Patchy new right infrahilar opacity , for which a subtle bronchopneumonia or possibly atelectasis could be considered in the right lower lobe .