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        Adult granulosa cell tumors of the ovary: a retrospective study of 30 cases with respect to the expression of steroid synthesis enzymes

        Sachiko Kitamura,Kaoru Abiko,Noriomi Matsumura,Hidekatsu Nakai,Yumiko Akimoto,Hirotoshi Tanimoto,Ikuo Konishi 대한부인종양학회 2017 Journal of Gynecologic Oncology Vol.28 No.4

        Objective: Some, but not all, granulosa cell tumors are characterized by estrogen production. This study was designed to determine whether there are clinical or pathological variations ingranulosa cell tumors in relation to the expression of sex steroid synthesis enzymes. Methods: Clinical symptoms, serum hormonal values, and histology of 30 granulosacell tumor patients who underwent surgery between 2002 and 2014 were retrospectivelyreviewed. Results: Most patients presented with abnormal genital bleeding including abnormalmenstrual cycles. Eight of 16 patients older than 50 years had endometrial hyperplasia andone had endometrial cancer. Serum 17β-estradiol (E2) levels tended to be higher in patientsover 50 years of age (p=0.081). Serum follicle-stimulating hormone (FSH) levels were low inall patients irrespective of serum E2 levels. Magnetic resonance imaging revealed a thickerendometrium in older as compared to younger patients (p<0.05). Tumor cells in the majorityof cases were positive for inhibin α and P450 aromatase, irrespective of age and serum E2levels. P450 17α-hydroxylase (P450c17) expression varied among cases. P450c17 was stronglypositive in luteinized tumor cells and weakly positive in theca cells and fibroblasts. High E2levels were associated with P450c17-positive cells in the tumor (p<0.05). Conclusion: The expression of hormone-synthesizing enzymes divides granulosa celltumors into 2 distinct types; tumors with P450c17-positive cells show elevated serum E2 andrelated clinical symptoms, while tumors without these cells show symptoms related to FSHsuppression by inhibin.

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