Background: Ovarian sex cord stromal tumors are rare neoplasms as compared to epithelial tumors. No large study has been done in Pakistan to find out the frequencies of various sex cord stromal tumors and their clinicopathological behavior in our region. The purpose of our study was to determine the various histological patterns and clinical features of ovarian sex cord stromal tumors along with follow-up in our set-up.
Methods: It is a retrospective observational study. The study was conducted in section of Histopathology, Aga Khan University Hospital, Karachi, Pakistan. All reported cases of sex cord stromal tumors of ovary during 1992 to 2012 were retrieved. The retrieved slides were reviewed and patient demographics, clinical and pathological features were noted on proforma. SPSS Statistics Version 19 was used for all analyses. Data is expressed as absolute values and percentage or as mean ± standard deviation (SD).
Results: A total of 480 cases of sex cord stromal tumors were retrieved. The median age was 45 years. Bilaterality was observed in 4 cases. Of the different subtypes of sex-cord stromal tumors, most common was adult granulosa cell tumor 211(43.9%). 24 Juvenile granulosa cell tumors were retrieved (5%). Other types were fibromas 98 (20.4%) fibrothecomas 47(9.8%), thecomas 26(5.4%), sertoli-leydig cell tumors 34(7%), sclerosing stromal tumors 26 (5.4%), steroid cell tumors (10) and 4 cases of sex cord tumor with annular tubules. Of various immunohistochemical stains applied, Inhibin was frequently positive in all subtypes and focal cytokeratins were also seen commonly. Follow up information was available in 305 cases and out of these only 16 (5%) developed recurrence or metastasis.
Conclusions: Sex cord stromal tumors are uncommon ovarian tumors in Pakistani population, with wide age range and diverse histological types having good prognosis. Immunohistochemical markers overlap with epithelial tumors so there is need to distinguish these two.
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| http://dx.doi.org/10.1186/1757-2215-6-87 | DOI Listing |
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