Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar silhouettes are stable since the prior exam . No focal consolidation , pleural effusion , or pneumothorax . Intact median sternotomy wires and unchanged positioning of the mediastinum surgical clips . No evidence of free subdiaphragmatic air .
    OUTPUT:
    
No evidence of free subdiaphragmatic air . No focal consolidation concerning for pneumonia .