Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to the chest radiograph obtained 2 .5 hours prior , there are increased opacities at the left lung base . Lungs are otherwise expanded and clear . Pleural effusions small , if any . Heart size and cardiomediastinal silhouettes are unchanged . An enteric tube passes below the diaphragm in outside the field of view .
    OUTPUT:
    
Increased left basilar opacities most concerning for aspiration , alternatively atelectasis or developing pneumonia . NG tube terminates at least in the distal stomach .