Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The endotracheal tube terminates 3 .4 cm above the carinal . A left IJ catheter terminates at the upper SVC . External pacer wires are demonstrated . Since ___ there has been interval improvement in aeration of the left upper lung zone . Large bilateral pleural effusions and mild central vascular congestion and edema are otherwise unchanged . There is no pneumothorax .
    OUTPUT:
    
Improved aeration of the left upper lung . Large bilateral pleural effusions and mild pulmonary vascular congestion and edema are otherwise unchanged since ___ .