Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy , CABG , and mitral valve repair . Cardiac , mediastinal and hilar contours are stable , with the heart size within normal limits . Pulmonary vascularity is normal . The lungs are hyperinflated with flattening in the diaphragms compatible with underlying COPD . There is minimal atelectasis at the lung bases , but no evidence of focal consolidation . No pleural effusion or pneumothorax is present . There are mild degenerative changes of the thoracic spine .
    OUTPUT:
    
No radiographic evidence for pneumonia or pulmonary edema .