Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Previously detected pulmonary nodules are not conspicuous on chest radiograph . The lungs appear relatively clear . The heart size is normal . The mediastinal contour is prominent due to a unfolded thoracic aorta . No pleural effusion or pneumothorax . Bony structures are intact . Degenerative changes and dextroscoliosis partially noted in the imaged lumbar spine .
    OUTPUT:
    
No acute findings .