Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size is milldy enlarged . Mediastinal and hilar contours are normal . Lungs are clear . Pulmonary vasculature is normal . No pleural effusion , pneumothorax , or focal consolidation is present . No acute osseous abnormalities detected . Multilevel degenerative changes are noted within the mid to lower thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .