Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes cause bronchovascular crowding . Mildly increased interstitial markings at bilateral lung bases are unchanged from multiple prior studies and likely represent chronic interstitial lung disease . There is no focal consolidation , pleural effusion , or pneumothorax . The cardiomediastinal silhouette is stable . The descending aorta is partially calcified and tortuous .
    OUTPUT:
    
Unchanged chronic interstitial lung disease . No focal consolidation .