Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . The heart size is normal . The hilar mediastinal contour is within normal limits . Linear opacities extending from the right hilum and across the left lung base , reflecting atelectasis also seen on the ___ CT . There is increased retrocardiac density at the left cardiophrenic angle , reflecting focally severe atelectasis , also seen on the CT . There is no pneumothorax or pleural effusion .
    OUTPUT:
    
Bibasilar atelectasis , with possible small consolidations , are not significantly changed in comparison to the CT from ___ .