Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are obtained demonstrating midline sternotomy wires and mediastinal clips . The retrocardiac density is again noted compatible with a known hiatal hernia . Slightly elevated right hemidiaphragm is unchanged . There is no focal consolidation , effusion , or pneumothorax . Cardiomediastinal silhouette is stable . Old right mid rib cage deformity is unchanged . No free air below the right hemidiaphragm .
    OUTPUT:
    
Hiatal hernia , no acute findings .