Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP view of the chest was reviewed . Cardiomediastinal and hilar contours are normal . There is no pneumothorax . Dense parenchymal opacities , especially in the lower lung zones , are consistent with severe pulmonary edema . There is no large pleural effusion . Displacement of the trachea to the left may be the result of a goiter in the right lobe of the thyroid .
    OUTPUT:
    
Severe pulmonary edema .