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An unusual presentation of struma ovarii mimicking a malignant process
Vera Loizzi1, Fabio Cappuccini, Michael L Berman
1The Division of Gynecologic Oncology, The Chao Family Comprehensive Cancer Center, University of California, Irvine Medical Center, Orange, California 92868, USA.
Background:
Struma ovarii is a rare form of ovarian neoplasm, composed entirely or predominantly of thyroid tissue. This tumor is generally benign, although malignant transformation has been reported.
Case:
We report an unusual presentation of a postmenopausal woman with benign struma ovarii associated with a large amount of ascites, a markedly elevated CA 125 serum level, and a large complex pelvic mass thereby mimicking an ovarian cancer.
Conclusion:
This case serves to remind clinicians that clinical features highly suspicious for ovarian cancer do not necessarily confirm a malignancy.