Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: ET tube ends ___ .9 cm above the carina . Right - sided PICC line is in mid SVC . Recurrent bibasilar opacities which could represent atelectasis or aspiration is unchanged since yesterday . There is no pleural effusion or pneumothorax . Mediastinal and cardiac contours are normal . A tube overlying abdominal left upper quadrant is of unknown location .
    OUTPUT:
    
Bibasilar recurrent opacities are unchanged since ___ ; they could reflect atelectasis or aspiration .