Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Elevation of the right hemidiaphragm is unchanged since the prior study in ___ . The lungs are clear . There is no focal consolidation , effusion , or pneumothorax . Mild cardiac silhouette enlargement is accentuated by low lung volumes .
    OUTPUT:
    
No acute cardiopulmonary process .