Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are mildly improved interstitial markings in the right lower lung . Diffuse interstitial changes corresponding to prior CT , are unchanged . Pulmonary vascular prominence and top normal heart size are unchanged from ___ . The AICD is in stable position .
    OUTPUT:
    
Improved right lower lung vascular congestion , otherwise unchanged chest radiograph from ___ . The results were discussed with Dr . ___ by phone at 4 :21 p .m .