Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The aortic knob is calcified . Mediastinal and hilar contours are unremarkable . The pulmonary vasculature is normal . Apart from minimal subsegmental atelectasis in the lung bases , the lungs are clear . No pleural effusion or pneumothorax is seen . There is hyperinflation of the lungs which is suggestive of underlying COPD . Multilevel degenerative changes with anterior bridging osteophytes are noted in the thoracic spine . No acute osseous abnormality is visualized .
    OUTPUT:
    
No acute cardiopulmonary process .