A 33-week infant was born to a gravida eight mother with a poor obstetric history. A late second trimester scan had shown a large intra-abdominal cyst in the fetus and polyhydramnios. The mother went into spontaneous labour at 33 weeks and a male baby was delivered by caesarean section. Soon after birth the infant was noted to have abdominal distension and bilious aspirates. A radiograph …