Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were provided . There is no focal consolidation , effusion , or pneumothorax . A large retrocardiac density is again seen containing small amounts of air compatible with a hiatal hernia . There is no pneumothorax or pleural effusion . Bony structures are intact . No free air below the right hemidiaphragm . There are bilateral breast implants .
    OUTPUT:
    
Large hiatal hernia , not significantly changed . Otherwise normal .