Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild cardiomegaly is stable compared to the most recent prior exam . The lung volumes are low exaggerating the hilar and mediastinal contours , which , aside from mild dilatation of the ascending aorta , better characterized on the prior CT , are unremarkable . Mild bibasilar atelectasis is persistent . There is no large pleural effusion or pneumothorax . The visualized osseous structures are unremarkable . Left - sided pacer leads terminate in appropriate position . Low lung volumes with mild bibasilar atelectasis . No evidence of a pneumothorax .
    OUTPUT:
    
Low lung volumes with mild bibasilar atelectasis .