Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . There is plate - like left basal atelectasis . Otherwise , the lungs are clear . Cardiomediastinal silhouette is normal . No free air below the right hemidiaphragm . The bony structures are intact .
    OUTPUT:
    
Mild left basal atelectasis . Otherwise unremarkable .