Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild cardiomegaly is accompanied by pulmonary vascular congestion and interstitial edema . As compared to previous radiographs of ___ and ___ , the extent of pulmonary edema has improved , and pleural effusions have decreased in size , with residual small effusions remaining . Although most of the pre-existing alveolar opacities have cleared since the prior ___ radiograph , a mass - like area of consolidation measuring 3 .4 x 2 .6 cm in the right upper lobe has only partially improved , previously measuring 4 .2 x 3 .9 cm in diameter . As this is a new finding compared to ___ , it is not concerning for malignancy , but it could potentially represent an area of infection in the appropriate clinical setting .
    OUTPUT:
    
1 . Improving pulmonary edema with residual predominantly interstitial edema remaining , and decreasing pleural effusions . 2 . Focal mass - like opacity in right upper lobe has slightly decreased in size since ___ . Differential diagnosis includes asymmetrical edema versus focal infectious pneumonia .