What is the most common cause of gastric outlet obstruction in a 4-week-old baby: (A) Annular pancreas, (B) Foreign body, (C) Congenital hyperophic pyloric stenosis, (D) Duodenel atresia
Answer is C. It is seen between 3rd and 6 the week of age of an infant because it&;s the time taken by the hyperophied muscle to cause complete obstruction. SRB edition 5th page no: 821