Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were provided . Midline sternotomy wires are noted . There is a nasogastric tube terminating in the left upper quadrant . The heart is mildly enlarged . The lungs appear clear . Bony structures are intact .
    OUTPUT:
    
Appropriately positioned nasogastric tube . Mild cardiomegaly . Otherwise , normal .