Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Post median sternotomy and . No abnormality seen in the seen of the sternum compared to the previous study ___ ___ . The visualized ribs on the chest radiograph appears normal . The heart is normal in size . There great vessels including the aorta and pulmonary arteries are unremarkable . The lungs are clear of ___ portion well - expanded . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No active disease .