Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single frontal view of the chest was obtained . Lungs are clear without focal consolidation . No pleural effusion or pneumothorax is seen . Cardiac and mediastinal silhouettes are stable . The patient is status post median sternotomy and CABG . Aortic arch calcifications are again seen .
    OUTPUT:
    
No acute cardiopulmonary process .