Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal radiograph of the chest demonstrate upper limits of normal heart size . ETT ends 3 cm above the carina . Enteric tube passes below the diaphragm and out of the field of view . Clear lungs , no pleural effusion or pneumothorax .
    OUTPUT:
    
No acute cardiopulmonary radiographic abnormality .