Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single frontal portable chest radiograph demonstrates unremarkable cardiomediastinal and hilar contours . Lungs are clear . No pleural effusion or pneumothorax identified . Accessed Port - A - Cath projects over the right chest with central venous catheter portion terminating at the cavoatrial junction . No pneumoperitoneum evident . Mild S - shaped thoracolumbar scoliosis is unchanged .
    OUTPUT:
    
No acute intrathoracic process . No pneumonia . No pneumoperitoneum .