Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs were obtained . The lungs are well expanded and clear . There is no consolidation , effusion , or pneumothorax . The cardiac and mediastinal contours are normal . There is no anterior thoracic opacity corresponding to the density seen on the prior thoracic spine film .
    OUTPUT:
    
Normal chest radiograph .