Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lines and Tubes : Left sided pacemaker with a single pacer wires remains unchanged . Right PICC terminates at the cavoatrial junction . Lungs : Persistent low lung volumes and bibasilar opacities , with mild interval worsening compared to the prior radiograph . Pleura : There is no pleural effusion or pneumothorax Mediastinum : Stable appearance of mild to moderate cardiomegaly and tortuosity of the thoracic aorta . Bony thorax : No interval change .
    OUTPUT:
    
Persistent low lung volumes with no interval change in bibasilar opacities , compatible with atelectasis versus pneumonia .