Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is mildly enlarged but unchanged . Mediastinal and hilar contours are stable . The pulmonary vascularity is not engorged . Minimal left basilar atelectasis is noted . No definite pleural effusion or pneumothorax is seen . Compression deformity of an upper thoracic vertebral body appears new compared to the prior study , but remains age indeterminate .
    OUTPUT:
    
Mild left basilar atelectasis . Compression deformity within the upper thoracic spine is new compared to the prior study , but is age indeterminate .