Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been no substantial interval change in the appearance of the chest compared to the previous radiograph performed earlier the same day . Cardiac , mediastinal and hilar contours are unchanged . Pulmonary vasculature is not engorged . Mild atelectasis is noted in the lung bases without focal consolidation . No pleural effusion or pneumothorax is identified .
    OUTPUT:
    
No acute cardiopulmonary abnormality and no substantial interval change from the previous exam performed earlier the same day .