Published online by Cambridge University Press: 13 May 2022
The possibility that women with polycystic ovary syndrome (PCOS) could be at increased risk of cancer was first suggested 14 years after the description of the syndrome by Stein and Leventhal in 1935.[1] This report was related to endometrial cancer, an association that could have some basis, at least in women with anovulatory PCOS, who are exposed to estrogen unopposed by progesterone, which when used as menopausal therapy was shown to increase the risk of endometrial cancer.[2] Based on the same mechanism, there could theoretically be an association between PCOS and cancers of breast and ovary.
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