Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest are compared to previous exam from ___ . Left chest wall pacing device is again noted . The lungs are clear of consolidation or pulmonary vascular congestion . Cardiac silhouette is slightly enlarged but unchanged . Postoperative changes of median sternotomy wires again noted with fracture of the top and third from the top sternal wires . Osseous structures are unchanged noting possible compression deformity at the lower thoracic level with an acute kyphosis which is unchanged from prior .
    OUTPUT:
    
No definite acute cardiopulmonary process .