Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The left lower lobe opacification is overall unchanged compared to ___ . Based on the chronicity , pneumonia is unlikely . The lungs are otherwise clear . No pleural effusions . No pneumothorax . The cardiomediastinal silhouette is unchanged . The sternotomy wires are intact without evidence of dehiscence .
    OUTPUT:
    
Stable chest radiograph since ___ . The left lower lobe opacity is unlikely pneumonia .