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Exaggerated Increases in the Serum Cortisol Level in a Woman Following Oral Contraceptive Treatment.
Published Web Location
https://doi.org/10.1016/j.aace.2024.07.005Abstract
BACKGROUND/OBJECTIVE: Extreme hypercortisolemia in an otherwise healthy patient can be due to familial dysalbuminemia, generalized glucocorticoid resistance, and estrogen-containing medications. I report a woman who appeared to have an exaggerated increase in the serum cortisol level following oral contraceptive treatment. CASE REPORT: A 50-year-old woman presented with extreme morning hypercortisolemia-cortisol levels of 61 and 55 mcg/dL (4 and 3 months before presentation, respectively; normal range, 8-25 mcg/dL)-found during workup of mildly increased white cell counts. The morning cortisol level had been 10 mcg/dL after administration of 1-mg dexamethasone. The 24-hour urine free cortisol level had been normal and only slightly increased after correction by creatinine. The patient was anxious about the extremely high cortisol levels but otherwise felt well. She took norgestimate-ethinyl estradiol contraceptive (0.18/0.215/0.25 mg - 35 mcg). Physical examination showed a well-appearing, lean female. The thyroid-stimulating hormone, total thyroxine, free thyroxine, total triiodothyronine, free triiodothyronine, androstenedione, dehydroepiandrosterone sulfate, aldosterone, and renin levels were normal. Morning total cortisol and cortisol-binding globulin (CBG) were tested before and after she held the oral contraceptive for 2 months. The total cortisol and CBG levels decreased from 50 to 26 mcg/dL and from 6.4 to 3.8 mg/dL (normal range, 1.7-3.1 mg/dL), respectively. DISCUSSION: Increases in the serum cortisol-binding proteins are a well-recognized cause for increases in the serum cortisol levels. CONCLUSION: This case suggests that modern oral contraceptives with low to moderate estrogen activity can cause extreme increases in the serum cortisol levels due to marked increases in the CBG levels.
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