Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable AP chest radiograph was obtained . Elevation of the right hemidiaphragm is chronic . Lung volumes are low . There is no focal consolidation , effusion , or pneumothorax . Moderate cardiomegaly is unchanged . Intact lumbar spinal fusion hardware is noted .
    OUTPUT:
    
Chronically elevated hemidiaphragm .