Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size is mildly enlarged . The aorta is mildly unfolded but unchanged . Mediastinal and hilar contours are normal , and there is no pulmonary vascular congestion . Lungs are clear without focal consolidation . No pleural effusion or pneumothorax is identified . Remote left - sided rib fractures are present .
    OUTPUT:
    
No acute cardiopulmonary abnormality .