Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An abnormal lobular appearance of the aortic arch reflecting an aneurysm appears unchanged . The heart is again moderately enlarged . The cardiac , mediastinal and hilar contours appear stable . Streaky retrocardiac opacity is consistent with minor unchanged atelectasis . Irregular opacity in the right upper lobe appears unchanged . Calcifications also appear unchanged in the right lung and left apex . The chest is probably hyperinflated to some extent . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No evidence of acute disease .