Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperinflated , suggesting chronic obstructive pulmonary disease . No focal consolidation is seen . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are unremarkable . Aortic knob calcification is noted .
    OUTPUT:
    
No acute cardiopulmonary process .