Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Upright AP and lateral views of the chest provided . Left chest wall pacemaker is noted with leads extending to the region the right atrium and right ventricle . There is mild l bibasilar atelectasis without convincing evidence for pneumonia , edema , large effusion or pneumothorax . The cardiomediastinal silhouette appears stable . Bony structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
Mild bibasilar atelectasis , otherwise unremarkable .