Thyroid disorders are frequent in women, especially during the childbearing period. New nodules are known to develop in a significant proportion of pregnant women. Preexisting nodules may increase in size and vascularity during pregnancy. The authors describe a patient at 26 weeks' gestation living in a “relatively” iodine-sufficient area, with a large and highly vascular thyroid nodule but normal thyroid functions. Both vascularity and size revealed considerable reduction on a follow-up sonographic examination three months after the delivery.
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