Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The lungs are hyperexpanded with flattening of the diaphragms , suggesting chronic obstructive pulmonary disease . Increased interstitial markings at the lung bases are relatively stable consistent with chronic changes . The aorta remains markedly tortuous with known aneurysm . No evidence of focal consolidation , pleural effusion , or pneumothorax is seen . Cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
No significant change , chronic changes , as above .