title: Struma ovarii showing clinical characteristics of ovarian malignancy.
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. Ascites have been reported in approximately 15-20% of all cases. However, the combination of struma ovarii and elevated CA125 has rarely been reported. We experienced a rare case of a postmenopausal woman with benign struma ovarii associated with massive ascites, a complex pelvic mass. There was marked elevation of her CA125 level. The clinical impression was ovarian malignancy. Surgical excision of the ovarian mass induced immediate resolution of the ascites and a normalization of the serum CA125 level. No recurrence of the ascites or of the tumor has been observed during the 10-month follow-up. Struma ovarii can mimic ovarian malignancy clinically, particularly if complex and associated with ascites and an elevated CA125 level.
authors.affiliation: Department of Obstetrics and Gynecology, College of Medicine, Chonnam National University, Gwangju, Korea.
authors.forename: S Y
authors.initials: SY
authors.lastname: Rim
authors.forename: S M
authors.initials: SM
authors.lastname: Kim
authors.forename: H S
authors.initials: HS
authors.lastname: Choi
mesh_terms: D001201:Ascites / Q000209:etiology; D014408:Biomarkers, Tumor / Q000097:blood*; D018394:CA-125 Antigen / Q000097:blood*; D005260:Female; D013509:Gynecologic Surgical Procedures; D006801:Humans; D008875:Middle Aged; D010051:Ovarian Neoplasms / Q000097:blood / Q000150:complications / Q000473:pathology* / Q000601:surgery; D013330:Struma Ovarii / Q000097:blood / Q000150:complications / Q000473:pathology* / Q000601:surgery; D013724:Teratoma / Q000473:pathology* / Q000601:surgery
chemical_list: D014408:Biomarkers, Tumor; D018394:CA-125 Antigen