Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright portable chest radiograph obtained . An AICD device is unchanged with lead tips extending to the right atrium and right ventricular regions . The heart remains mildly enlarged . While the lung volumes are low , the lungs appear grossly clear without large consolidation , effusion , or pneumothorax . Bony structures are intact .
    OUTPUT:
    
Limited , negative .