Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size remains moderately enlarged . The mediastinal contour is similar . Diffuse alveolar opacities are noted bilaterally , likely reflective of severe pulmonary edema . No large pleural effusion or pneumothorax is detected . Spinal catheter is re - demonstrated .
    OUTPUT:
    
Diffuse bilateral alveolar opacities concerning for severe pulmonary edema .