A newborn presenting with intestinal obstruction showed on abdominal X-ray, multiple air-fluid levels. The diagnosis is not likely to be –

You can solve this question in a very simple way :- This newborn is presenting with intestinal obstruction and pylorus is a part of stomach (not the intestine). Pyloric obstruction shows a single bubble (single air fluid) appearance (not multiple air-fluid levels). Duodenal atresia and Ladd's band show double bubble. Heal atresia shows multiple bubbles (multiple air-fluid levels).