Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single frontal portable upright view of the chest was obtained . The heart is of normal size with normal cardiomediastinal contours . The lungs are clear without focal or diffuse abnormality . The pulmonary vasculature is unremarkable . No pleural effusion or pneumothorax . Osseous structures are unremarkable . No radiopaque foreign body .
    OUTPUT:
    
No acute cardiopulmonary process .