Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Mediastinal and hilar contours are unchanged . Pulmonary vasculature is not engorged . Low lung volumes are present with minimal atelectasis at the lung bases . No focal consolidation , pleural effusion or pneumothorax is present . Remote right seventh posterior rib fracture is again seen .
    OUTPUT:
    
No acute cardiopulmonary abnormality .