Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The endotracheal tube continues to be slightly low , 1 .5 cm above the carina . Lung volumes are low and there is crowding at the bases . There has been some interval partial clearing of the left lower lobe volume loss / infiltrate . There continue to be small bilateral pleural effusions
    OUTPUT:
    
Slight improvement compared to prior