Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright radiograph of the chest demonstrates well expanded lungs . There is an opacification at the right lower lung zone , which likely represents aspiration , and superimposed infection can not be excluded . The left lung is clear . The cardiomediastinal and hilar contours are unremarkable . There is no pleural effusion or pneumothorax . A nasogastric tube is seen with the tip terminating in the stomach and with the last sideport above the GE junction .
    OUTPUT:
    
1 . Opacity in the right lower lung zone concerning for aspiration , and superimposed infection can not be excluded . 2 . Nasogastric tube seen with the tip in the stomach and the last side port above the GE junction .