Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mildly enlarged . The mediastinal and hilar contours are unchanged with diffuse atherosclerotic calcifications of the aorta noted . The pulmonary vasculature is not engorged . Elevation of the left hemidiaphragm is similar with mild bibasilar atelectasis noted . No focal consolidation , pleural effusion or pneumothorax is present . Moderate degenerative changes are seen in the thoracic spine .
    OUTPUT:
    
Mild bibasilar atelectasis . Otherwise , no acute cardiopulmonary abnormality .