Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs through the chest demonstrate redemonstration of hyperinflated lungs with flattening of the diaphragm suggestive of COPD . Cardiac , mediastinal , and hilar contours are normal . No pleural effusion or pneumothorax is present . No acute osseous abnormality is identified .
    OUTPUT:
    
No acute cardiopulmonary process . Hyperinflated lungs compatible with COPD .