Early severe fetal Graves disease in a mother after thyroid ablation and thyroidectomy.

Background: Fetal Graves disease rarely presents before 26 weeks of gestation. We report a case of severe fetal Graves disease at 18 weeks of gestation in a mother who had very elevated Graves disease antibodies despite being several years post-thyroid ablative therapy and thyroidectomy.

Case: A 36-year-old woman, gravida 1 para 0, with severe Graves disease post-radioiodine ablation followed by thyroidectomy on levothyroxine presented at 18 weeks of gestation for ultrasound examination.