Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Except for mild bibasilar atelectasis , the lungs are otherwise clear . Slight elevation of left hemidiaphragm is chronic . There is no pleural effusion or pneumothorax . Mediastinal and cardiac contours are normal .
    OUTPUT:
    
Except for minimal bibasilar atelectasis the remaining of the exam is unremarkable .