Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are improved . There is no pleural effusion or pneumothorax . The heart is not enlarged . The mediastinal and hilar contours are normal . There is crowding of the pulmonary vasculature but no frank pulmonary edema . Rightward deviation of the cervical trachea reflects known goiter .
    OUTPUT:
    
No evidence of pulmonary edema .