Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Nasogastric tube tip terminates in the left upper quadrant , in the expected region of the stomach . Sternal wires are intact and aligned . Aortic and mitral valve replacements are in stable position . Dual - chamber pacemaker leads are stable . Lung volumes are low . Cardiomediastinal silhouette is normal .
    OUTPUT:
    
Nasogastric tube tip terminating in the left upper quadrant .