Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate enlargement of the cardiac silhouette is re - demonstrated . Coronary artery stenting is again visualized . A moderate size hiatal hernia is unchanged as is diffuse atherosclerotic calcification of the aorta . Hilar contours are within normal limits . There is mild pulmonary vascular congestion without frank pulmonary edema . Lung volumes are low with mild patchy opacities in the lung bases . No large pleural effusion or pneumothorax is identified . Moderate degenerative changes are again noted in the thoracic spine . Multiple clips project over the left chest wall .
    OUTPUT:
    
1 . Low lung volumes with patchy bibasilar opacities , possibly atelectasis . Infection is not excluded in the correct clinical setting . 2 . Re - demonstration of moderate size hiatal hernia .