Heteropagus parasitic twins – a case of omphalopagus with major omphalocele and congenital heart disease

A 3250g, female second twin, known antenatally to have an omphalocele and interventricular communication, was delivered by elective cesarean section (pelvic 1st twin) to a 33-year-old, G1P1, mother at 36 weeks’ gestation, at the referral tertiary level maternity of a university hospital center. It was a monochorionic diamniotic pregnancy through a donor in vitro fertilization. No obvious exposure to teratogens was documented during gestation. Both fetuses had negative karyotype for T21 and T13 and normal microarray.