Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear , but the lung volumes are very low , making the heart looks bigger . There is no pneumothorax or pleural effusion . NG tube ends in lower esophagus and has not passed the gastric band .
    OUTPUT:
    
NG tube is not in adequate position , ending in the lower esophagus and has not passed the gastric band .