Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral radiographs demonstrate clear lungs and normal hilar and cardiomediastinal contours . There is no pneumothorax or pleural effusion . Pulmonary vascularity is normal . Mild atherosclerotic plaques can be seen in the aortic arch . There are degenerative changes of the thoracic spine with kyphosis .
    OUTPUT:
    
No acute cardiopulmonary process .