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Radiological evolution of progestogen-induced meningioma: A monocentric retrospective study.
Fundamental & Clinical Pharmacology 2023 January 25
CONTEXT: Cyproterone acetate (CPA) is known to induce meningioma, and recently, nomegestrol acetate (NMA) and chlormadinone acetate (CMA) were also involved. Progestagen-induced meningioma management starts with progestogen discontinuation and is either interventional (surgery and/or radiotherapy) or conservative (clinical and MRI radiological follow-up). We performed a retrospective volumetric radiological outcome study of progestogen-induced meningiomas diagnosed in our hospital.
METHOD: We analysed progestogen-related meningiomas diagnosed until 30 June 2021, with at least one diagnostic and one follow-up MRI results. Meningioma volumes were centrally retrospectively measured using a T1-weighted 3D millimeter sequence with gadolinium injection on a post-processing console.
RESULTS: We analysed 98 meningiomas of 38 females and one transgender (male-to-female), of which 25 (64.1%) had taken CPA, 7 (17.9%) NMA, 3 (7.7%) CMA, and 4 (10.2%) several progestogens. Eleven patients (24 meningiomas) underwent interventional management, 7 patients had meningiomas followed by conservative or interventional management, and 21 patients (51 meningiomas) had only conservative management. Of these 21 patients, 17 had discontinued their progestogen less than 6 months before, of which 14 (82.3%) had decreased or stable meningioma(s) during a 24-month median follow-up [3 to 75] period. OVERALL: four of the 39 patients experienced meningioma progression (three during conservative treatment and one after surgery), including two patients who had continued NMA or CMA treatment several years after diagnosis.
CONCLUSION: Our study confirms a generally favorable outcome of progestogen-related meningioma after conservative treatment, especially for CPA. It also underlines the need for progestogen discontinuation at meningioma diagnosis.
METHOD: We analysed progestogen-related meningiomas diagnosed until 30 June 2021, with at least one diagnostic and one follow-up MRI results. Meningioma volumes were centrally retrospectively measured using a T1-weighted 3D millimeter sequence with gadolinium injection on a post-processing console.
RESULTS: We analysed 98 meningiomas of 38 females and one transgender (male-to-female), of which 25 (64.1%) had taken CPA, 7 (17.9%) NMA, 3 (7.7%) CMA, and 4 (10.2%) several progestogens. Eleven patients (24 meningiomas) underwent interventional management, 7 patients had meningiomas followed by conservative or interventional management, and 21 patients (51 meningiomas) had only conservative management. Of these 21 patients, 17 had discontinued their progestogen less than 6 months before, of which 14 (82.3%) had decreased or stable meningioma(s) during a 24-month median follow-up [3 to 75] period. OVERALL: four of the 39 patients experienced meningioma progression (three during conservative treatment and one after surgery), including two patients who had continued NMA or CMA treatment several years after diagnosis.
CONCLUSION: Our study confirms a generally favorable outcome of progestogen-related meningioma after conservative treatment, especially for CPA. It also underlines the need for progestogen discontinuation at meningioma diagnosis.
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