Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are mildly hypoinflated with crowding of vasculature . There is elevation of left hemidiaphragm with left lower lobe atelectasis . Heart size , mediastinal contour , and hila are unremarkable . Limited assessment of the upper abdomen demonstrates an air - fluid level within the stomach . No free intraperitoneal air .
    OUTPUT:
    
Left lower lobe atelectasis with elevation of left hemidiaphragm . No pneumonia .