Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mildly enlarged . The mediastinal and hilar contours are unchanged . Pulmonary vasculature is normal and the lungs are essentially clear without focal consolidation . No pleural effusion or pneumothorax is present . No acute osseous abnormality is detected .
    OUTPUT:
    
No acute cardiopulmonary abnormality .