Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac , mediastinal and hilar contours are unchanged with the heart size within normal limits . The pulmonary vasculature is not engorged . Lungs are hyperinflated , as seen previously , with minimal left basilar atelectasis . No focal consolidation , pleural effusion or pneumothorax is present . There mild degenerative changes noted in the lower thoracic spine .
    OUTPUT:
    
Minimal left basilar atelectasis . Otherwise , no acute cardiopulmonary abnormality .