Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were provided . Tiny clips project over the neck , likely related to prior thyroid surgery . Upper lobe lucency likely reflects underlying emphysema . Mild bibasilar atelectasis is noted without definite signs of pneumonia or effusion . There is no overt edema . Heart size appears grossly stable . Aorta is partially calcified and tortuous . Bony structures appear intact .
    OUTPUT:
    
Emphysema with lower lung atelectasis . No definite signs of pneumonia or CHF .