Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are poorly expanded but without focal opacities . Cardiomediastinal and hilar contours are unremarkable . There is no pleural effusion or pneumothorax . There is no evidence of abdominal free air .
    OUTPUT:
    
No acute intrathoracic process or signs of intra-abdominal free air .