Bilateral Thyroid-Type Struma Ovarii in a Postmenopausal Patient: A Case Report and Review of Literature

Muhammad Azhar, Khurram Shafique, Twisha Oza, M.A. Haseeb, Raavi Gupta


Struma ovarii is a monodermal variant of a germ cell tumor composed predominantly of thyroid tissue. It is most often unilateral with an incidence of 0.3-0.7%. Bilateral struma ovarii is rather rare with only two cases reported in peri- and postmenopausal patients. Here, we present a third case of bilateral struma ovarii in a postmenopausal female with slowly enlarging pelvic mass and pelvic organ prolapse. The patient was treated with total hysterectomy and bilateral salpingo-oophorectomy which revealed bilaterally enlarged cystically dilated ovaries. Histopathologic examination showed mature thyroid follicles with abundant colloid consistent with bilateral struma ovarii. No teratomatous elements or features of malignancy were identified. Thyroid hormone levels were within their respective reference ranges as was also observed in the previous two cases. A diagnosis of bilateral struma ovarii should be considered in the differential diagnosis of bilateral pelvic masses in peri- and postmenopausal patients. There was no clinical or laboratory evidence of hyperthyroidism in any of the three patients.

J Clin Gynecol Obstet. 2017;6(2):45-48


Struma ovarii; Teratoma; Ovarian tumor; Bilateral

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