Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since ___ , mild pulmonary edema and vascular congestion have improved . Widened mediastinal contour and prominent azygos vein which is presumably from volume overload is better than before . Heart size is top normal . Mediastinal and hilar contours are unchanged . No lung opacities concerning for pneumonia .
    OUTPUT:
    
Since ___ , mild pulmonary edema , mediastinal and vascular congestion have improved .