Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs were obtained . Small bilateral pleural effusions are new . A retrocardiac opacity shadows over the supine on the lateral projection . No new nodule or pneumothorax is present . Cardiac contour is unchanged . Aortic arch calcifications are stable . Dual - chamber pacing lead project over the right atrium and right ventricle . Mid thoracic vertebral plana is stable .
    OUTPUT:
    
1 . Increased retrocardiac opacity most likely represents atelectasis , but consolidation can not be excluded . 2 . Small bibasilar effusions .