Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . Cardiac , mediastinal and hilar contours are unremarkable , and the heart size is within normal limits . Mild atherosclerotic calcifications are noted at the aortic arch . Scattered calcified nodules are compatible with granulomas , unchanged . No focal consolidation , pleural effusion or pneumothorax is visualized . No displaced fractures are seen . There are mild degenerative changes in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary process .