Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperinflated , and there is increased AP diameter of the chest with minimal diaphragmatic flattening consistent with mild COPD . The lungs are clear . The hilar and cardiomediastinal contours are normal . There is no pneumothorax or pleural effusion . The pulmonary vascular markings are normal .
    OUTPUT:
    
1 . No acute cause of the patient 's cough is identified . However , the chest radiograph does not constitute a full evaluation of the bronchial tree ; this would require a chest CT . 2 . Radiographic evidence of mild COPD .