Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patchy opacity in the right infrahilar region is new compared to the prior radiograph , and projects over the lower thoracic spine on the lateral view . Lungs are otherwise clear , and cardiomediastinal contours are stable in appearance .
    OUTPUT:
    
Patchy right basilar opacity , which may reflect focal atelectasis , aspiration , or early pneumonia . Followup radiographs may be helpful in this regard .