Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The mediastinal and hilar contours are unchanged . Diffuse coarse interstitial opacities are most pronounced within the periphery of the right upper lung field and left lung base concerning for a chronic interstitial lung disease which appears relatively unchanged compared to the prior exam . No pulmonary edema is visualized , and no pleural effusion or pneumothorax is seen . Multilevel degenerative changes are noted in the thoracic spine .
    OUTPUT:
    
No significant interval change from the prior study with findings suggestive of a chronic interstitial lung disease . This can be further assessed with high - resolution chest CT .