Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest film dated ___ at 05 :47 is submitted .
    OUTPUT:
    
Tracheostomy tube unchanged in position . Bilateral diffuse parenchymal opacities are more confluent in the left upper lung and in the right mid and lower lung . When compared to the prior study , there is no significant interval change given differences in technique and positioning . No pleural effusions or pneumothoraces are seen . Overall cardiac and mediastinal contours are likely stable given patient rotation on the current study .