What causes the increased frequency of ovarian torsion during pregnancy?

Updated: Jun 27, 2017
  • Author: Erik D Schraga, MD; Chief Editor: Eugene C Lin, MD  more...
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Approximately 1 in 1800 pregnancies is complicated by adnexal torsion, typically between the sixth and fourteenth weeks of gestation. This increased frequency in pregnant women is likely due to greater laxity of the tissues adjoining the ovaries and oviducts during pregnancy, as well as to enlargement of the ovary in early pregnancy secondary to the corpus luteum cyst.

Detorsion of the adnexa during pregnancy has not been found to compromise fetal well-being. However, if the corpus luteum cyst is removed during salpingo-oophorectomy, supplemental progesterone is indicated.

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