Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to the chest radiograph from 1 day prior , the nasogastric tube has been advanced with the tip in the pylorus region . Small to moderate left - sided pleural effusion has decreased . Left lower lobe collapse has improved with persistent left basilar opacities . New right lower lobe basilar opacification . No pneumothorax .
    OUTPUT:
    
NG tube in the pylorus region . Improved left small pleural effusion and basal opacity . Worsening right lower lobe atelectasis or aspiration .