Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Study is limited by flexed neck with chin obscuring upper portions of the lungs . Within this limitation , the cardiac and mediastinal silhouettes appear slightly more prominent on today 's study compared to the most recent prior examination which may reflect a combination of positioning and AP lordotic view . Again noted is a markedly unfolded thoracic aorta with a right paratracheal opacity ( chest CT from ___ demonstrates an aneurysmal aortic arch and proximal descending thoracic aorta ) . There is opacification of bilateral lung bases consistent with pleural effusion and atelectasis , small on the right and moderate on the left . Underlying infection can not be excluded .
    OUTPUT:
    
1 . Interval slight prominence of the mediastinal silhouette likely accentuated by patient positioning and represents known unfolded thoracic aorta and right paratracheal opacity seen on chest CT from ___ . 2 . New bilateral pleural effusions , small on the right and moderate on the left , with adjacent compressive atelectasis . Underlying infection can not be excluded and should be considered in the correct clinical setting . 3 . Air-filled loops of bowel not adequately assessed on this image .