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Updated: Sep 27, 2026

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Published on: March 3, 2023
Cystic struma ovarii presenting with ascites and an elevated CA-125 level. A case report
Aqiba Bokhari1, Ginni S Rosenfeld, Bemadette Cracchiolo
1Departments of Pathology and Laboratory Medicine and of Obstetrics, Gynecology and Women's Health, University of Medicine and Dentistry of New Jersey-New Jersey Medical School, Newark, USA.
Background:
Struma ovarii is a monodermal teratoma that usually presents as a solid pelvic mass. Occasionally the lesions are cystic. Rare cases present with ascites or pseudo-Meigs' syndrome. The association of a cystic struma ovarii with ascites and an elevated CA-125 level is exceptionally rare.
Case:
A 51-year-old woman presented with ascites and a cystic pelvic mass. There was marked elevation of her CA-125 level. The clinical impression was ovarian carcinoma. Frozen section revealed a multicystic struma ovarii.
Conclusion:
Struma ovarii can mimic ovarian carcinoma clinically, particularly if cystic and associated with ascites and an elevated CA-125 level.
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