Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are low lung volumes . Interstitial opacities are again seen , similar to prior exam and consistent with known chronic interstitial lung disease . No evidence of pulmonary edema is seen . There is no pleural effusion or pneumothorax . The cardiomediastinal silhouette is stable .
    OUTPUT:
    
No significant interval change . Interstitial opacity consistent with known chronic interstitial lung disease .