Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is mild left basilar atelectasis . The lungs are otherwise clear . The cardiomediastinal and hilar contours are normal . There is no pleural effusion or pneumothorax . Pleural surfaces are unremarkable . There is no evidence of pulmonary edema .
    OUTPUT:
    
No evidence of pulmonary edema .