Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Lung volumes are markedly low . Midline sternotomy wires are noted . Allowing for low lung volumes , the lungs appear clear . No large effusions or pneumothorax . Cardiomediastinal silhouette is unchanged . No overt signs of edema . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
No acute findings .