This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Disorders of Gastrointestinal System Including Diarrhea, Subject name: Pediatrics
[{'content': 'Double bubble sign in children is seen in all EXCEPT: \nSelect and explain. \nA. Ladds band, B. Annular pancreas, C. Pancreatic pseudocyst, D. Diaphragmatic hernia', 'role': 'user'}, {'content': "Answer: D \nExplanation: * Obstruction of 2nd pa of duodenum cause 'double bubble' sign on plain abdominal radiograph * It may be due to- Annular pancreas, Pancreatic pseudocyst, Ladds band & tumor in head of pancreas.", 'role': 'assistant'}]