Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable view of the chest . Somewhat ill - defined interstitial markings seen throughout the lungs . There is no confluent consolidation . Cardiac silhouette is enlarged but likely in part accentuated by technique . Atherosclerotic calcifications noted at the aortic arch . Left chest wall dual - lead pacing device is identified .
    OUTPUT:
    
Increased markings throughout the lungs which could be chronic , although superimposed interstitial edema is also suspected .