Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes remain low with interval improvement in bilateral perihilar and lower lobe opacities . No pleural effusion or pneumothorax . Left sided PICC terminates at the cavoatrial junction . Unchanged appearance of hardware projecting over the spine in the region of the mid thorax . There has been interval removal of a right - sided central line , enteric tube and endotracheal tube .
    OUTPUT:
    
Persistent low lung volumes with improving perihilar and bibasilar atelectasis and / or consolidation . No pleural effusion or pneumothorax .