Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low with moderate bibasilar atelectasis . Heart size is top normal . There is no large pleural effusion or pneumothorax . There are distended gas - filled loops of apparent large bowel in the upper abdomen incompletely imaged on this study .
    OUTPUT:
    
1 . Low lung volumes with moderate bibasilar atelectasis . 2 . Distended gas - filled loops of large bowel in the upper abdomen could reflect ileus or obstruction . Consider dedicated radiographs of the abdomen for further evaluation .