Variation Of Meningioma In Response To Cyproterone Acetate In A Trans Woman

Background: Meningiomas express estrogen and progesterone receptors, suggestive of hormonal responsiveness. So far, eight cases of trans women with a meningioma have been reported in the literature.Methods: Detailed report of the symptoms, treatment, and follow-up of an individual transgender patient with a meningioma.Results: A trans woman treated long-term with gender affirming hormone therapy, including cyproterone acetate, a synthetic progestin and anti-androgen, was diagnosed with a meningioma, significantly expanding in volume over 10 years. After stopping cyproterone acetate a substantial volume decrease of the meningioma was noticed within 3 months.Conclusion: This addition to the literature demonstrates that a conservative approach with interruption of cyproterone acetate may be a sufficient intervention, obviating the need for additional neurosurgical treatment.