Hypothyroidism Controlled On Levothyroxine in Obstetrics & Gynecology — Case | General Gynecology | SMLE Q#15891
SMLE Question #15891
Obstetrics & Gynecology
General Gynecology
Objective: OBJ-ETH-STERIL
Last updated: February 2026
A 34-year-old G3P2 woman with hypothyroidism controlled on levothyroxine undergoes a routine fetal anatomy ultrasound at 20 weeks’ gestation. The pregnancy has been uncomplicated, and thyroid function tests are normal. Ultrasound shows a single umbilical artery with no additional structural abnormalities. Which of the following is the most likely cause of this finding?
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