Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Note is made again of midline sternotomy wires and mediastinal clips , which are stable . Cardiac silhouette is normal . The mediastinal and hilar silhouettes are normal . Lungs are clear with no pleural effusion , pulmonary edema , or pneumothorax .
    OUTPUT:
    
1 . No acute cardiopulmonary disease .