Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Chronic elevation of the left hemidiaphragm has been present since at least ___ . Cardiomegaly is again noted . Lung volumes are low . Pleural calcifications suggest prior asbestos exposure . Sternal wires appear intact and aligned . Mediastinal clips and hardware are again noted .
    OUTPUT:
    
Stable chest radiographs .