<prompt> Double bubble sign in children seen in AELadds bandAnnular pancreasPancreatic pseudocystDiaphragmatic hernia  <response>: Obstruction of 2nd part of duodenum cause double bubble sign on plain abdominal radiograph. OIt may be due to -i Annular pancreasii Pancreatic pseudocystiii Ladds band iv Tumor in the head of the pancrease 