Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The mediastinal and hilar contours are unremarkable . There is no pulmonary vascular congestion . Lungs are clear without focal consolidation . No pleural effusion or pneumothorax is present . There are no displaced rib fractures .
    OUTPUT:
    
No acute cardiopulmonary abnormality .