Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mildly enlarged but unchanged . The aorta is tortuous . Mediastinal and hilar contours are unremarkable . The pulmonary vasculature is normal . Linear opacities in the lung bases likely reflect areas of subsegmental atelectasis . Lungs are hyperinflated . No focal consolidation , pleural effusion or pneumothorax is identified . Loss of height anteriorly of an upper lumbar vertebral body is unchanged from the previous CT .
    OUTPUT:
    
No acute cardiopulmonary abnormality .