Now that's a pretty rare birth defect known as Omphalocele, in which an infant's intestine or other abdominal organs are outside of the body because of a hole in the belly button area. The intestines are covered only by a thin layer of tissue and can be easily seen. It is a type of hernia. The muscles in the abdominal wall (umbilical ring) do not close properly. As a result, the intestine remains outside the abdominal wall. Prenatal ultrasounds often identify infants with an omphalocele before birth. Otherwise, a physical examination of the infant is enough.Surgical repair is the treatment.