Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is increased interstitial opacification bilaterally , in a relatively symmetric distribution , indicative pulmonary edema and a small effusion along the lateral aspect of the right lung . There may be some superimposed patchy density in the right base . The heart size is enlarged . There is no pneumothorax . Moderate dextro convex scoliosis of the thoracic spine is noted .
    OUTPUT:
    
Moderate to severe pulmonary edema and a small right pleural effusion . There may be some superimposed patchy density in the right base .