Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a diffuse interstitial abnormality , consistent with mild to moderate pulmonary edema , which is slightly increased since the prior exam . There is no focal consolidation to suggest pneumonia . There is no pleural effusion or pneumothorax . Again , the lungs are slightly hyperexpanded . The heart is markedly enlarged , and similar in size to the prior exam . Atherosclerotic calcifications are noted along the aortic arch . Multiple mild compression deformities are noted in the thoracic spine , and stable in appearance .
    OUTPUT:
    
1 . Mild to moderate pulmonary edema , increased since the prior exam . 2 . Severe cardiomegaly , unchanged from the prior exam .