Massive Ovarian Growth in a Woman With Severe Insulin-Resistant Polycystic Ovary Syndrome Receiving GnRH Analogue.

Context: Ovarian hyperandrogenism from polycystic ovary syndrome (PCOS) and hyperinsulinemia from insulin resistance are modulators of ovarian follicle development. We report on a woman with PCOS and hyperandrogenism and severe insulin resistance from metabolic syndrome who received long-term GnRH analogue therapy preceding bilateral salpingo-oophorectomy for massive ovarian enlargement. Ovarian histological examination showed proliferating granulosa cells within antral follicles coexistent with serous cystadenofibromas, demonstrating a unique link between hyperinsulinemia and granulosa cell mitogenesis.