Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright radiograph of the chest demonstrates interval improvement in the aeration of the left upper lung , with persistent opacification of the left lower lung , likely representing a combination of pleural effusion and atalectasis . There is a small right - sided pleural effusion with adjacent atelectasis . The cardiomediastinal and hilar contours are unchanged . Endotracheal tube ends 2 .3 cm from the carina . The left - sided subclavian central venous line ends at the cavoatrial junction .
    OUTPUT:
    
Interval improvement in aeration of the left upper lung with persistent left sided pleural effusion and adjacent atalectasis .