Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Mediastinal and hilar contours are unremarkable . Subtle opacity is seen within the left suprahilar region , not clearly delineated on the prior studies , and could reflect an area of infection . Remainder of the lungs are clear . No pleural effusion or pneumothorax is identified . No acute osseous abnormality is seen .
    OUTPUT:
    
Left suprahilar opacity , new from the prior study , concerning for an area of infection .