Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal silhouette and hilar contours are normal . Lungs are clear . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Normal chest radiograph ; specifically , no evidence of pneumonia or small airway disease . Results were discussed over the telephone with Dr . ___ by ___ ___ at 2 :37 p .m . on ___ at time of initial review .