Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single portable erect AP chest radiograph was obtained . The lungs are clear . No nodule , consolidation or effusion is present . Sternal wires are intact . Mediastinal vascular clips are present . There are aortic arch calcifications . There is no free abdominal air .
    OUTPUT:
    
No acute cardiopulmonary disease or pneumoperitoneum .