Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . A coronary artery stent is noted . There is biapical scarring with no focal consolidation , pleural effusion or pneumothorax . Coarsened lung markings are compatible emphysema as noted on prior CT . The cardiac , mediastinal and hilar contours are within normal limits .
    OUTPUT:
    
No acute cardiopulmonary process .