Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is of normal size with normal cardiomediastinal contours . Lung volumes are low . Lungs are otherwise clear without focal or diffuse abnormality . No pleural effusion or pneumothorax . Pulmonary vasculature is unremarkable . Osseous structures are unremarkable . No radiopaque foreign bodies .
    OUTPUT:
    
Low lung volumes . No acute cardiopulmonary process .