Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal and hilar contours are normal . Minimal linear scar in the lingula with otherwise clear lungs . . No pulmonary vascular congestion . No pneumothorax or pleural effusion . Old , healed fractures of the third through sixth posterior left ribs are again seen . There is no evidence of acute fracture .
    OUTPUT:
    
No acute cardiopulmonary abnormality .