Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable upright frontal chest radiograph demonstrates an interval decrease in lung volumes and increased basilar atelectasis . The cardiac silhouette is minimally bigger and enlarged , and the pulmonary vasculature is accentuated . However , there is no new parenchymal opacity and no overt pulmonary edema . There is no pleural effusion . The mediastinal contours are unchanged . An abandoned left subclavian catheter fragment is unchanged . A left IJ approach central venous catheter tip is unchanged in the mid SVC .
    OUTPUT:
    
Decreased lung volumes , with consequent increase in bibasilar atelectasis .