Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal hilar contours are within normal limits . There is mild bibasilar atelectasis . Lungs are otherwise clear . There is no focal consolidation , pneumothorax or large pleural effusion .
    OUTPUT:
    
Mild bibasilar atelectasis , otherwise no acute cardiopulmonary process .