Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single frontal view of the chest was obtained . There are relatively low lung volumes . The cardiac and mediastinal silhouettes are stable with the cardiac silhouette enlarged and the aorta calcified and tortuous . Increased interstitial markings persist likely relating to patient 's chronic interstitial disease . No pleural effusion or pneumothorax is seen .
    OUTPUT:
    
1 . Low lung volumes . Chronic interstitial process .