Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Bibasilar atelectasis is noted . No pneumothorax or effusion . A rounded cystic structure overlying the lateral aspect of the left upper lung compatible with blebs on prior CT chest . No definite rib fracture is seen . Cardiomediastinal silhouette appears grossly within normal limits .
    OUTPUT:
    
Bibasilar atelectasis . No pneumothorax . No definite rib fracture though there is strong concern dedicated rib series is recommended to further assess .