A 2-day-old, term male neonate, weighing 2.1 kg, 1st in birth order was born by normal delivery. He presented to our department with a small fleshy swelling at the base of the umbilicus, bilious vomiting and epigastric fullness. Antenatal ultrasounds were not done. On examination, the baby was hemodynamically stable, pulse rate150/min and respiratory rate-50/min. anicteric and mildly dehydrated...