Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The lungs are clear without focal consolidation . No pleural effusion or pneumothorax is seen . The aortic knob is calcified . The mediastinal and cardiac silhouettes are unremarkable . Some degenerative changes are seen along the spine . No displaced fracture is seen . Degenerative changes are seen at the right acromioclavicular joint .
    OUTPUT:
    
No acute cardiopulmonary process .