Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The nasogastric tube is coiled within the hiatal hernia . Although the distal tip does pass below the diaphragm sagittal appears to be just past the diaphragmatic hiatus and thus the NG tube should be advanced for more optimal positioning . The lung volumes are low . There is no focal consolidation , pleural effusion or pneumothorax . Enlargement of the cardiomediastinal silhouette is likely technical .
    OUTPUT:
    
Nasogastric tube is coiled within the hiatus hernia , although the distal tip is below the diaphragm . Recommend advancement for more optimal positioning .