Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright chest radiograph obtained . No free air below the right hemidiaphragm . Lung volumes are low . Aside from bronchovascular crowding in the lower lungs due to expiratory phase radiograph , there is no definite sign of pneumonia or CHF . No pleural effusion or pneumothorax . Cardiomediastinal silhouette is normal . Bony structures are intact .
    OUTPUT:
    
No acute findings , including no radiographic signs of pneumoperitoneum .