Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable AP view of the chest was provided . The tip of the NG tube resides in the left upper quadrant . The lungs are clear . Cardiomediastinal silhouette is normal with atherosclerotic calcifications again noted at the aortic knob . Bony structures are intact . The lungs are hyperinflated with upper lobe lucency and splaying of bronchovasculature suggesting underlying emphysema .
    OUTPUT:
    
NG tube positioned appropriately .