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Hum. Reprod. Advance Access originally published online on November 4, 2004
Human Reproduction 2005 20(2):397-401; doi:10.1093/humrep/deh597
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Human Reproduction vol. 20 no. 2 © European Society of Human Reproduction and Embryology 2004; all rights reserved

Bilateral oophorectomy in a pregnant woman: hormonal profile from late gestation to post-partum: Case report

Paulina Villaseca1,4, Carmen Campino1, Eveline Oestreicher1, David Mayerson2, María Serón-Ferré3 and Eugenio Arteaga1

Departments of 1 Endocrinología and 2 Obstetricia y Ginecología, Facultad de Medicina, 3 Department of Ciencias Fisiológicas, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile

4 To whom correspondence should be addressed at: Departamento de Endocrinología, Facultad de Medicina, Pontificia Universidad Católica, Lira 85 – 5° Piso, Santiago, Chile. Email: pvillase{at}med.puc.cl

BACKGROUND: A 16 week pregnant woman presented with massive theca–lutein cysts requiring bilateral oophorectomy. Pregnancy progressed uneventfully and spontaneous lactation ensued after delivery. METHODS: To study the role of the ovary on the hormonal profile at the end of gestation and in post-partum, we measured FSH, estradiol (E2), unconjugated estrone (E1), unconjugated estriol (E3), sex hormone-binding globulin, progesterone, dehydroepiandrosterone sulphate and prolactin at 37 weeks gestation and at 8 h, 4 days, 5 weeks, and 2 months post-partum. RESULTS: These hormones were within the range expected for ovary-intact pregnant and puerperal women until 4 days post-partum. At 5 weeks post-partum, FSH increased to a peri-menopausal range (31.4 IU/l) while estrogens remained within the normal puerperal range (E2=239 pmol/l; E1=102 pmol/l), contrasting with their rapid changes in non-pregnant women after bilateral oophorectomy. At 2 months, while partially breastfeeding, FSH, E2 and E1 were closer to menopausal range (68 IU/l, 136 and 70.2 pmol/l respectively), and hormone replacement was started. CONCLUSIONS: We conclude that the ovary is not required to maintain a normal hormonal profile in late pregnancy and early puerperium. However, the increase in FSH to peri-menopausal levels at 5 weeks post-partum, despite breastfeeding, suggests that the ovary is needed to maintain low FSH concentrations during lactation.

Key words: bilateral ovariectomy/estrogens/FSH/pregnancy/premature menopause


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