This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Radiology
Double Bubble sign on abdominal skiagram is suggestive of: March 2005 
Select and explain. 
A. Ileal atresia, B. Anorectal malformation, C. Bladder calculi, D. Duodenal Atresia
D: Duodenal Atresia
Answer: D: Duodenal Atresia 
Explanation: Ans. D: Duodenal Atresia Plain films are useful in assessing the level of the obstruction. Air-fluid levels in the stomach and duodenum (double-bubble sign), an impoant finding of acute duodenal obstruction, can also be seen on plain films.