Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is minimal streaky density at the left base most consistent with subsegmental atelectasis . The left hemidiaphragm is now mildly elevated . The lungs are otherwise clear . The heart is normal in size . Mediastinal structures are otherwise unremarkable and stable in appearance . The bony thorax is grossly intact .
    OUTPUT:
    
Left basilar subsegmental atelectasis . Mild elevation of the left hemidiaphragm .