Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No significant interval change . Tracheostomy tube projecting over the superior mediastinum is unchanged . Fractured sternotomy wires are also unchanged . Multiple upper mediastinal clips are in similar position . The lungs are clear . No focal consolidation , edema , effusion , or pneumothorax . The cardiomediastinal silhouette is unchanged . The heart appears top - normal in size . No acute osseous abnormality . Broken sternal wires .
    OUTPUT:
    
No significant interval change . No pneumonia .