Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright AP radiograph of the chest shows prominent apical lucencies and cystic spaces compatible with chronic emphysema . Right infrahilar opacity likely represents a summation of normal vasculature . The cardiomediastinal silhouette and hilar contours are normal . The aorta is heavily calcified and tortuous . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Emphysema . No acute cardiopulmonary abnormality .