Struma Ovarii Showing the Clinical Characteristics of the Malignancy / 대한산부인과학회잡지

ABSTRACT

Struma ovarii is a rare form of ovarian neoplasm, composed entirely or predominantly of thyroid tissue and generally a benign germ cell tumor of the ovary. The tumor usually present with findings of an asymptomatic mature mass. Despite containing thyroid tissue, only 5% of struma ovarii have features of hyperthyroidism. Ascites have been reported in approximately 15-20% of all cases. The combination of struma ovarii and elevated CA125 has rarely been reported. We experienced an case of benign struma ovarii showing the clinical characteristics such as massive ascites, high serum CA125 level and a complex pelvic mass strongly suggestive of the malignancy. So, we report this case with a brief review of literature.