Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single frontal view of the chest was obtained . New OG tube terminates below the diaphragm . Endotracheal tube terminates in similar position to prior . Elevation of the right hemidiaphragm and linear atelectasis of the right mid lung are unchanged . Left perihilar opacity shows rapid improvement since ___ . No new lung opacity . Heart size and cardiomediastinal contours are stable .
    OUTPUT:
    
1 . New OG tube terminates below the diaphragm . 2 . Left perihilar opacity has rapidly improved since ___ . Such rapid improvement is more typical of aspiration than infectious pneumonia .