Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Lungs are well inflated and grossly clear . No pleural effusion or pneumothorax . Hilar and cardiomediastinal contours are normal . Mild to moderate degenerative changes of the thoracic spine .
    OUTPUT:
    
Mild to moderate degenerative changes of the thoracic spine , otherwise normal chest radiograph .