Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright radiograph of the chest demonstrates well expanded lungs . An area of opacity of left base likely represents aspiration . Cardiomediastinal and hilar contours are unremarkable . No pneumothorax , pleural effusion , or consolidation . Right - sided internal jugular central venous line ends in the upper SVC . Endotracheal tube ends 4 cm from the carina . Nasogastric tube tip ends in the stomach , with the last side port above the GE junction .
    OUTPUT:
    
1 . Satisfactory positioning of the endotracheal tube . 2 . Nasogastric tube tip ends in the stomach , with the last side port above the GE junction . This should be advanced prior to use . 3 . Opacity in the left base likely represents aspiration .