Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . A right IJ access dialysis catheter is seen with its tip terminating at the cavoatrial junction . Motion artifact through the lower lungs limits assessment . There is bibasal atelectasis without convincing evidence for pneumonia or edema . No large effusion or pneumothorax . Cardiomediastinal silhouette is unchanged . Bony structures are intact .
    OUTPUT:
    
Bibasilar opacities likely atelectasis . Right IJ central venous catheter terminates at the cavoatrial junction .