Endocrine Abstracts

Clinical fetal thyrotoxicosis is a rare disease occurring in 1-5% of pregnancies with Graves disease. Although transplacental passage of maternal TSH receptor stimulating autoantibodies (TRab) to the fetus does occur early in gestation, the fetal concentration is low until the end of second trimester, but reaches maternal levels in the last period of pregnancy. The mortality of fetal thyrotoxicosis is 12–20% mainly due to heart failure. We present a case of fetal and neo...