Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is mildly enlarged . The aorta is tortuous . Mediastinal and hilar contours are unchanged . Pulmonary vasculature is not engorged . Right basilar chest tube is re - demonstrated . Small to the moderate size right pleural effusion is similar to that seen on the prior radiograph with associated right basilar atelectasis . Left lung is clear . No pneumothorax is demonstrated . Moderate multilevel degenerative changes are seen in the thoracic spine with unchanged loss of height anteriorly of a mid thoracic vertebral body .
    OUTPUT:
    
Small to moderate size right pleural effusion , not substantially changed from the prior radiograph with right ___ atelectasis .