Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP chest radiograph demonstrate well expanded and clear lungs . There is no focal consolidation . The cardiomediastinal and hilar contours are unchanged when compared to prior examination ___ . There is no appreciable pleural effusion . There is no pneumothorax . A left central venous line is seen terminating at the cavoatrial junction .
    OUTPUT:
    
No pneumonia . No significant changes since prior examination most recently ___ .