Case challenge · Imaging / Fetal medicine / Maternal-fetal medicine · teaching

Fetal Goiter (Hypothyroid/Hyperthyroid) · case challenge

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Case #1Imaging / Fetal medicine / Maternal-fetal medicine

📋 Case data

Anterior neck mass + Doppler + thyroid function signsCannot distinguish / large goiter causing neck hyperextension or polyhydramnios

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Step 1 / 1 · Anterior neck mass + Doppler + thyroid function signs

Anterior neck mass + Doppler flow + thyroid function signs (distinguish hypo/hyperthyroid)?

💡 Fetal goiter = a symmetric lobulated solid anterior neck mass. The most common cause = maternal Graves (antithyroid drugs causing fetal hypothyroidism, or TRAb causing fetal hyperthyroidism). In maternal Graves/antithyroid drugs/high TRAb, screen every 4–6 weeks from 18–22 weeks. A large goiter → neck hyperextension (impeding vaginal delivery), esophageal compression (polyhydramnios), airway compression.

For teaching. Decisions and their basis are taken from this site's reviewed care pathways; for licensed clinicians/trainees, this does not replace clinical judgment or local protocols.