Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Blunting of the posterior costophrenic angle suggests small effusions , as on prior . Chain sutures seen over the right mid lung . Linear opacity in the retrocardiac region is likely atelectasis . Superiorly , the lungs are clear . Moderate cardiac enlargement is unchanged . Atherosclerotic calcifications seen in the thoracic aorta as well as degenerative changes in the spine . No displaced fracture seen on this nondedicated exam .
    OUTPUT:
    
Small bilateral pleural effusions . Probable left basilar atelectasis . Otherwise no acute cardiopulmonary process .