Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette is enlarged and the aorta is tortuous , both without change . Lung volumes remain relatively low . Pulmonary vascularity is within normal limits accounting for this factor . Bibasilar areas of atelectasis are again demonstrated , slightly worse on the right and slightly improved on the left . There remains moderate elevation of the right hemidiaphragm anteriorly . No substantial pleural effusion . Diffusely distended loops of bowel are seen in the imaged portion of the upper abdomen , incompletely imaged on this chest radiograph exam .
    OUTPUT:
    
1 . Bibasilar atelectasis . 2 . Distended loops of bowel in imaged upper abdomen , for which dedicated abdominal radiographs may be helpful to distinguish ileus from obstruction if warranted clinically .