Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no consolidation , pleural effusion , or pneumothorax . Cardiomediastinal and hilar silhouettes are stable in appearance compared to ___ radiograph . Prominence of the azygos vein contour and central pulmonary vascularity is also unchanged since that time .
    OUTPUT:
    
Stable radiographic appearance of the chest with no evidence of pneumonia .