Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Endotracheal tube tip terminates in standard position , approximately 4 .4 cm from the carina . Heart size is normal . Retrocardiac opacity may reflect atelectasis , but aspiration or infection can not be excluded . Patchy right basilar atelectasis is also noted . There is no pleural effusion or pneumothorax . The pulmonary vasculature is not engorged . Multiple clips are demonstrated in the left upper quadrant of the abdomen .
    OUTPUT:
    
1 . Endotracheal tube in standard position . 2 . Retrocardiac opacity may reflect atelectasis , but infection or aspiration can not be excluded in correct clinical setting .