Goiter in fetus without maternal thyroid disease: a case report

Objective: The aim is to discuss fetal hypothyroidism which we consider that its prenatal diagnosis and treatment is significant since it may cause physical and mental growth retardation in affected fetuses. Case: A fetal goiter case was presented which was found during routine ultrasonographic examination at 30 weeks of gestation. The pregnant women had no thyroid history and all thyroid function tests were normal including thyroid auto-antibodies in laboratory tests. In the Doppler ultrasonography, a thyroid gland grown diffusely with increased bloodshot was observed in the fetus. By these findings, it was considered that fetal goiter would be caused by fetal hypothyroidism. Amniocentesis or cordocentesis was recommended as final diagnosis, but the patient refused invasive procedures.