Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs were obtained . Lung volumes are low . The lungs are clear . There is no consolidation , effusion or pneumothorax . Mild cardiomegaly is unchanged . Since ___ , nearly all of the median sternotomy wires are fractured .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . Median sternotomy wire fractures .