Coexistence of struma ovarii with marked ascites and elevated CA-125 levels: case report and literature review.
BACKGROUND
Struma ovarii is a rare form of ovarian neoplasm and consists mainly of thyroid tissue. Ascites has been reported in approximately one-third of all the cases. However, the combination of struma ovarii and elevated CA-125 has rarely been reported.


METHODS
We described a case of benign struma ovarii, presenting with the clinical features of ovarian cancer: large complex pelvic mass, gross ascites and markedly elevated serum CA-125 levels. Surgical excision of the ovarian mass was followed by rapid resolution of the ascites and reduction of the serum CA-125 level.


CONCLUSIONS
Struma ovarii can mimic ovarian malignancy clinically, when presented with ascites and an elevated CA-125 level.
Mui
Mabel Po
MP
Department of Obstetrics and Gynaecology, Centro Hospitalar Conde de S Januario, Macao, People's Republic of China. mabelmui@yahoo.com
Tam
Kar-Fai
KF
Tam
Fiona K Y
FK
Ngan
Hextan Y S
HY
D001201:Ascites / Q000097:blood* / Q000150:complications; D014408:Biomarkers, Tumor / Q000097:blood; D018394:CA-125 Antigen / Q000097:blood*; D005260:Female; D006801:Humans; D008875:Middle Aged; D010051:Ovarian Neoplasms / Q000097:blood / Q000150:complications / Q000473:pathology; D013330:Struma Ovarii / Q000097:blood* / Q000150:complications / Q000473:pathology
D014408:Biomarkers, Tumor; D018394:CA-125 Antigen