Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable supine view of the chest . Endotracheal tube is positioned approximately 9 mm above the carina . There is near complete opacification of the left hemi thorax with several areas of loculated gas noted . Right lung is clear .
    OUTPUT:
    
1 . Low - lying ET tube . Recommend retraction by 2 cm for more optimal positioning . 2 . Near complete opacification of the left hemi thorax . ___ , MD