Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were provided . Midline sternotomy wires and mediastinal clips are again noted . There is mild elevation of the left hemidiaphragm . No focal consolidation , effusion or pneumothorax is seen . Bony structures are intact . No free air below the right hemidiaphragm . There is degenerative disease and a mild compression deformity in the lower thoracic spine near the thoracolumbar junction .
    OUTPUT:
    
Elevation of the left hemidiaphragm . No definite signs of pneumonia or CHF .