Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post sternotomy and coronary artery bypass graft surgery . The heart is mild to moderately enlarged . The cardiac , mediastinal and hilar contours appear unchanged . Pleural effusions have resolved . There is mildly exaggerated kyphotic curvature centered along the mid thoracic spine and suspected bony demineralization . Moderate flowing anterior osteophytes are visualized along the lower thoracic , mid thoracic and upper lumbar spines .
    OUTPUT:
    
No evidence of acute disease .