Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been placement of an NG tube with appropriate positioning with the tip in the distal gastric body . There is otherwise no significant change compared to prior examination . Heart size is normal . Cardiomediastinal silhouette and hilar contours are unremarkable . Lungs are clear . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Adequate positioning of NG tube .