The fetus is in the second trimester with a mean gestational age of 24 weeks. It shows a midline protrusion of some abdominal contents through a covered hernia sac at the base of the umbilical cord, in keeping with omphalocele. It is reported to be highly associated with chromosomal and congenital anomalies.

Differential diagnosis includes:

• physiological gut herniation: diagnosed before 12 weeks gestational age, with CRL less than 55 mm and size less than 7 mm in diameter
• gastroschisis: herniation of bowel loops through a small paramidline defect and not covered with a membrane