Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are normal . There is no pleural effusion or pneumothorax . Lung volumes are increased compared to the most recent prior study . Diffuse interstitial abnormality with small nodules not significantly changed . Pulmonary vasculature is within normal limits .
    OUTPUT:
    
Diffuse interstitial abnormalities , small nodules , with no appreciable progression . Improved lung volumes .