Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are obtained . The left lung base is elevated , unchanged since ___ . Mild left basilar atelectasis is noted , otherwise the lungs are clear . The heart size is normal .
    OUTPUT:
    
Left lung base elevation unchanged . Mild left basilar atelectasis . No acute cardiopulmonary abnormality . The above findings were communicated to Dr . ___ by Dr . ___ ___ page at 14 : 10 , 5 minutes after discovery was made and were subsequently discussed via telephone .