JCEM Case Reports Journal Article

Hyperthyroidism in a Twin Pregnancy With a Hydatidiform Mole and a Coexisting Live Fetus

March 25, 2025

Management Dilemmas

 

Samantha Jacobson, Jonathan-Raphaël Stetco, Richard Brown, Natasha Garfield
JCEM Case Reports, Volume 3, Issue 2, February 2025, luaf013
https://doi.org/10.1210/jcemcr/luaf013

Abstract

Hyperthyroidism in twin pregnancies involving a hydatidiform mole and a coexisting live fetus is a rare condition requiring careful management. We present a 34-year-old pregnant woman at 12 weeks’ gestation with severe nausea, vomiting, and mild vaginal bleeding. A transvaginal ultrasound revealed a dichorionic diamniotic twin pregnancy with 1 normal fetus and 1 hydatidiform mole, leading to hyperthyroidism from elevated β human chorionic gonadotropin levels. Conservative management without antithyroid medications, combined with regular monitoring, allowed the pregnancy to continue to term, resulting in the delivery of a healthy baby at 39 weeks. Postpartum management required treatment of retained products of conception. This case highlights the complexities in the management of complications for both mother and fetus.

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