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Author

Marina P. Bezerra de Menezes

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Review Oct 2026

A-163 Elevated Serum Estradiol in Levonorgestrel-Releasing Intrauterine System Users: A Case Series Highlighting Post-Analytical Challenges

The levonorgestrel-releasing intrauterine system (LNG-IUS) acts predominantly at the endometrial level without consistently suppressing the hypothalamic–pituitary–gonadal axis. Residual ovarian activity may persist, occasionally resulting in functional follicular cysts capable of producing estradiol. Serum estrad...

Marina P. Bezerra de Menezes, Rachel Petrola, Milena G. Teles et al. · 0 citations

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