A fetus with an immature umbilical cord teratoma associated with exomphalos: case report and review of the literature.

OBJECTIVE To describe the antenatal and pathological features of an immature umbilical cord teratoma associated with exomphalos, and to review the literature on this subject. CASE PRESENTATION An abdominal wall defect, suspected to be an exomphalos, was identified during routine ultrasound examination performed at 13 weeks of gestation. The pregnancy was terminated. Fetopathological examination revealed an immature umbilical cord teratoma associated with exomphalos. Chromosomal microarray analysis was normal. CONCLUSIONS Umbilical cord teratomas, albeit very rare, should be emphasized as a possible differential diagnosis when abdominal wall defects are detected. Since cord teratomas may lead to adverse fetal or neonatal outcomes, close follow-up of the fetus is recommended.