Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volume are low . There are bilateral diffuse interstitial opacities , with associated hilar indistinctness and vascular upper re-distribution . Foci of more patchy opacities are seen in the right lower lobe . Chronic elecvation of left hemidiaphragm with left basilar opacity is also seen . Severe cardiomegaly is not significantly changed from prior . There might be small bilateral pleural effusions . There is no pneumothorax . Severe degenerative changes of both shoulders are present .
    OUTPUT:
    
Findings compatible with acute pulmonary edema on the background of severe cardiomegaly . Bibasilar patchy opacities may represent superimposed atelectasis versus infection .