Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Known left scapular and lower left rib fractures , better evaluated on the outside hospital chest CT . There is bibasilar atelectasis . A more opacity confluent opacity at the left lung base , may be secondary to aspiration in the setting of trauma . There is no pneumothorax . Surgical clips are noted in the right upper quadrant . Rounded opacity adjacent to right hemidiaphragm contour may correspond to diaphragmatic eventration , and correlation with CT findings is suggested .
    OUTPUT:
    
No evidence of pneumothorax . Known fractures better seen on CT from same day . Bibasilar atelectasis with a more confluent opacity in the left lower lobe , which may represent aspiration or contusion in the setting of trauma .