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 a patchy right infrahilar opacity within the right lower lobe with suggestion that it may be due to atelectasis , although it is not completely specific . Elsewhere , the lungs appear clear . There is no evidence for pulmonary edema . No pleural or pericardial effusions are seen . The osseous structures are unremarkable .
    OUTPUT:
    
Patchy non-specific right infrahilar opacity , which could be seen with atelectasis , although the possibility of pneumonia is not excluded in the appropriate setting .