This refers to the: finding on an X-ray of the abdomen, which shows two large air filled spaces,the double bubble sign.The air is trapped in the stomach & 1st part of the duodenum(upper part of intestine),which are separated by the pyloric sphincter, creating the appearance of two bubbles visible on x-ray.There is no air seen in the distal duodenum because the atresia completely closes it off.
Answered 11/6/2014
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