Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate cardiomegaly is unchanged . The mediastinal and hilar contours are similar . Pulmonary vasculature is not engorged . Patchy bibasilar opacities may reflect atelectasis . No pleural effusion or pneumothorax is seen . There are mild multilevel degenerative changes noted in the thoracic spine .
    OUTPUT:
    
Moderate cardiomegaly without pulmonary edema . Patchy bibasilar opacities , likely atelectasis .