Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size remains mildly enlarged . The aorta is diffusely calcified . Mediastinal and hilar contours are unchanged . The pulmonary vascularity is not engorged . Minimal left basilar atelectasis is noted . No focal consolidation , pleural effusion or pneumothorax is present . Multilevel degenerative changes in the thoracic spine are again seen .
    OUTPUT:
    
Mild left basilar atelectasis . No congestive heart failure .