Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart appears normal in size and configuration . Trachea is midline , and the lungs are well expanded . Cardiomediastinal contours are unremarkable . Lungs are clear with no evidence of focal infiltrates . No pleural effusions and no pneumothorax .
    OUTPUT:
    
Normal radiographic study of the chest .