Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . Mediastinal and hilar contours are unremarkable . There are mild atherosclerotic calcifications of the aortic knob . The pulmonary vasculature is normal . Lungs are clear without focal consolidation . No pleural effusion or pneumothorax is present . Moderate multilevel degenerative changes are visualized in the thoracic spine . Clips from prior cholecystectomy are seen in the right upper quadrant of the abdomen .
    OUTPUT:
    
No acute cardiopulmonary process .