Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Left chest wall pacer device is again seen with leads extending to the region the right atrium and right ventricle . Mild bibasilar atelectasis noted . There is no convincing evidence for pneumonia or edema . No large effusion or pneumothorax . The overall heart and mediastinal contours appear unchanged . Bony structures are intact . No free air is seen below the right hemidiaphragm . There is a focal eventration again noted at the right hemidiaphragm .
    OUTPUT:
    
Mild basal atelectasis , otherwise unremarkable exam .