Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to chest radiograph from ___ , increasing lower lobe opacities with low lung volumes . No interstitial pulmonary edema . The cardiac silhouette is not enlarged . No pleural effusions or pneumothorax . Support devices remain in similar position with the ETT 2 .6 cm from the carina .
    OUTPUT:
    
Increasing bibasal opacities , which may be due to atelectasis or aspiration .