Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No localizing history is available . No dedicated rib films are obtained as part of this examination . Allowing for this , the cardiomediastinal silhouette is unchanged , with a heart size at the upper limits of normal . The aorta is calcified and minimally unfolded . There is upper zone redistribution , without overt CHF . There is minimal bibasilar atelectasis , right - greater - than - left , which is slightly more pronounced than on ___ . No pneumothorax is detected . No focal consolidation or effusion is identified . No lucent or sclerotic rib fracture line or displaced rib fracture is detected . Focal calcifications within the abdomen anterior to the lumbar spine likely lie within the aortic wall , as suggested on the PET scan from ___ .
    OUTPUT:
    
Bibasilar atelectasis . No focal contusion , effusion , or pneumothorax detected . No obvious rib fracture is identified . If clinical suspicion for rib fracture remains high and additional imaging is desired , then dedicated rib radiographs could help for further assessment .