Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The patient is status post median sternotomy and CABG . No focal consolidation , pleural effusion , or evidence of pneumothorax is seen . Cardiac and mediastinal silhouettes are stable and unremarkable . Degenerative changes are seen along the spine .
    OUTPUT:
    
No acute cardiopulmonary process . No evidence of pneumonia . The mediastinum is not widened .