Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Eventration of the right hemidiaphragm noted . Retrocardiac density is consistent with known large hiatal hernia . No evidence of pneumonia or CHF . No pleural effusion or pneumothorax . Cardiomediastinal silhouette appears grossly within normal limits . Imaged osseous structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
No evidence of pneumonia . Large hiatal hernia .