Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours are unchanged with heart size appearing top normal . Fullness of the right hilum is similar . The pulmonary vasculature is normal . Lungs remain hyperinflated suggestive of COPD . Linear atelectasis in the left lung base is unchanged . There is no focal consolidation , pleural effusion or pneumothorax identified . Mild multilevel degenerative changes are seen in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .