Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to the prior chest radiograph , the external pacemaker has been removed . There is a aortic stent . There is a diffuse reticular interstitial pattern , more pronounced at the bases , which has improved in comparison to the prior chest radiograph . Heart size is normal . The mediastinal and hilar contours are normal . No pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities . There is a marker seen within the right lower lung . There are surgical clips seen within the upper abdomen .
    OUTPUT:
    
1 . Improved pulmonary edema in comparison to chest radiograph from ___ . 2 . Background reticular pattern reflects unchanged chronic interstitial lung disease .