Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are somewhat low in volume but clear with linear bibasilar atelectasis , but no focal consolidation . There is no pleural effusion or pneumothorax with perhaps mildly increased interstitial markings . The heart is normal in size with normal cardiomediastinal contours . Dense aortic valvular calcifications are noted . The patient 's femoral catheter terminates in the right atrium as before .
    OUTPUT:
    
Possible mild pulmonary edema with femoral catheter terminating in the right atrium as before .