Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size is borderline enlarged . Mediastinal and hilar contours are normal . The pulmonary vascularity is normal . The lungs are clear . No pleural effusion or pneumothorax is present . No acute osseous abnormalities visualized . Degenerative spurring of the right acromioclavicular joint is present .
    OUTPUT:
    
No acute cardiopulmonary abnormality .