Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided demonstrate midline sternotomy wires . The lungs appear clear . No focal consolidation , effusion or pneumothorax is seen . Atherosclerotic calcifications are again noted along the aortic knob . The heart size is stable . Bony structures are intact . No free air below the right hemidiaphragm . There are no displaced rib fractures identified .
    OUTPUT:
    
No acute findings in the chest .