Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Lung volumes are markedly low which limits evaluation . There are 2 clips projecting over the left lower lung . There is atelectasis in the lower lungs with associated volume loss . Overall appearance is similar to prior CT . Please correlate for a chronic aspiration . The upper lungs appear well aerated . Heart size can not be assessed . Mediastinal contour is normal . No acute bony abnormalities .
    OUTPUT:
    
Lower lung atelectasis appears chronic . Mid upper lungs are well aerated .