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Ovarian stimulation and granulosa-cell tumour
W Willemsen1, R Kruitwagen, B Bastiaans
1Department of Obstetrics and Gynaecology, Radboud University Hospital, Nijmegen, Netherlands.
Lancet (London, England)
|April 17, 1993
Summary
Ovarian stimulation for infertility may be linked to granulosa-cell tumors. Further research is needed to confirm a causal relationship between gonadotropins and tumor development.
Area of Science:
- Reproductive Endocrinology
- Gynecologic Oncology
Background:
- Ovarian stimulation for infertility uses high gonadotropin concentrations, deviating from physiological levels.
- Common side effects like hyperstimulation and multiple pregnancies are well-documented.
Observation:
- Twelve patients developed granulosa-cell tumors following ovarian stimulation with clomiphene citrate and/or gonadotropins.
- This association between ovarian stimulation and granulosa-cell tumors in humans has not been previously reported.
Findings:
- While a causal link is unproven, animal studies suggest gonadotropin exposure may relate to granulosa-cell tumor development.
- Postulated mechanisms include a pre-existing tumor triggered by hormones, oncogenic effects of elevated follicle-stimulating hormone, or coincidence.
Implications:
- Ovarian stimulation should be reserved for valid indications with thorough ovarian assessment.
- Extended follow-up for women undergoing ovarian stimulation is recommended to monitor for potential long-term effects.