Anatomy

An infant present with an omphalocele at bih. Which of the following applies to this condition?

It is also seen in patients with congenital aganglionic megacolon

It results from herniation at the site of regression of the right umbilical vein

It is caused by a failure of recanalization of the midgut pa of the duodenum

It is caused by failure of the midgut to return to the abdominal cavity after herniation into the umbilical stalk