Inhibin-producing ovarian granulosa cell tumor as a cause of secondary amenorrhea: case report and review of the literature |
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Authors: | Kurihara Shuichi Hirakawa Toshio Amada Satoshi Ariyoshi Kazuya Nakano Hitoo |
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Institution: | Department of Obstetrics and Gynecology, Kyushu University Hospital, Fukuoka, Japan. |
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Abstract: | We report the case of 31-year-old patient with an inhibin B-secreting granulosa cell tumor of the left ovary who presented with secondary amenorrhea. Preoperative serum hormonal levels were as follows: follicle-stimulating hormone (FSH) 0.3 mIU/mL, luteinizing hormone (LH) 9.81 mIU/mL, estradiol 142.0 pg/mL and inhibin B 2429 pg/mL. Gonadotropin-releasing hormone (GnRH) test revealed no FSH response and a normal LH response. After removal of the tumor, the levels of FSH and inhibin B returned to within the normal range, and regular menses resumed 27 days postoperatively. In premenopausal women, secondary amenorrhea may be the initial manifestation of granulosa cell tumor. A low FSH level coupled with normal levels of E2 and LH, the inhibition of the FSH response to GnRH and an elevated inhibin level suggest the presence of an inhibin-secreting ovarian tumor and also rule out the possibility of isolated FSH deficiency. |
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Keywords: | estradiol follicle-stimulating hormone granulosa cell tumor inhibin secondary amenorrhea |
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