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: Pediatrics
Double bubble sign in children seen in AJE ? 
Select and explain. 
A. Ladds band, B. Annular pancreas, C. Pancreatic pseudocyst, D. Diaphragmatic hernia
D: Diaphragmatic hernia
Answer: D: Diaphragmatic hernia 
Explanation: Ans. is 'd' i.e., Diaphragmatic hernia o Obstruction of 2nd pa of duodenum cause double bubble sign on plain abdominal radiograph. o It may be due to - i) Annular pancreas ii) Pancreatic pseudocyst iii) Ladds band iv) Tumor in the head of the pancrease