Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post median sternotomy , mitral and tricuspid valve replacements , and CABG . Heart size is normal . Mediastinal and hilar contours are within normal limits . Pulmonary vasculature is normal . Lungs are clear without focal consolidation . No pleural effusion or pneumothorax is identified . Hypertrophic changes are seen within the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .