Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size remains mildly enlarged . Mediastinal and hilar contours are unremarkable . The lungs are clear . Pulmonary vasculature is normal . No pleural effusion or pneumothorax is identified . No acute osseous abnormality is present .
    OUTPUT:
    
No acute cardiopulmonary abnormality .