Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright radiograph of the chest demonstrates hyperinflated , clear lungs . Cardiomediastinal and hilar contours are unchanged . There is slight elevation of the left hemidiaphragm . There is no pneumothorax , consolidation , or pleural effusion .
    OUTPUT:
    
No acute cardiopulmonary process .