Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single AP radiograph was obtained . There is diffuse airspace opacity within the lungs , radiating from the hila , most consistent with severe pulmonary edema . The heart size is difficult to assess . The mediastinal contours are normal . No definite pleural effusions . There is no pneumothorax .
    OUTPUT:
    
Diffuse pulmonary airspace opacity which may reflect severe pulmonary edema .