<prompt> Double bubble sign seen inAnnular pancreasUreteroceleHypertrophic pyloric stenosisWilms tumour  <response>: Annular pancreas 1120, 1198-LB 1137-B L 25thAnnular pancreas - in which a ring of pancreatic tissue from the head of the pancreas surrounds the descending duodenum X-ray shows a dilated stomach and proximal duodenum double bubble sign and little or no air in the rest of the small bowel.Congenital duodenal obstruction - causes of duodenal obstruction are atresia, mucosal web, annular pancreas, preduodenal portal vein and peritoneal bands Ladds bands from malrotations - shows - double bubble sign 1316-CSDT 11th 