Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to exam performed 6 hours prior , there is mild improvement of the right interstitial opacities , possibly due to better aeration . There is increased volume loss on the left with elevation of left hemidiaphragm and leftward mediastinal shift , likely due to lower lobe collapse and small amount of pleural fluid . The heart size is mildly enlarged . ETT terminates approximately 3 .3 cm from the carina . There is no significant change in monitoring and support devices .
    OUTPUT:
    
1 . Left lower lobe collapse with minimal pleural effusion . 2 . ET tube in standard position .