Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A portable upright radiograph the chest demonstrates clear lungs and normal hilar and cardiomediastinal contours . There is no pneumothorax or pleural effusion . Pulmonary vasculature is normal . There is no pneumoperitoneum . A left chest wall port catheter terminates at the cavoatrial junction .
    OUTPUT:
    
No evidence of pneumoperitoneum .