Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are somewhat low . The heart has increased in size from prior exam , the azygos vein is more prominent than on prior , and there is a new right pleural effusion , consistent with a volume overload state . There is an opacity at the right lung base , likely representing atelectasis given the short time course of development from prior . The opacity in the right medial lung likely represents the cardiac silhouette shifted due to patient rotation . The lungs are otherwise clear . There is no left pleural effusion or pneumothorax . A VP shunt is noted passing to the right chest .
    OUTPUT:
    
1 . Increased heart size , increased prominence of the azygos vein , and new right pleural effusion , consistent with a volume overloaded state . 2 . Opacity right lung base , most likely representing atelectasis .