Searchable abstracts of presentations at key conferences in endocrinology

ea0090oc3.5 | Oral Communications 3: Pituitary and Neuroendocrinology 1 | ECE2023

Interest of serum and salivary cortisol diurnal cycle in the positive diagnostic of Cushing syndrome and in the differential diagnosis of pseudo-Cushing syndrome

Fideline Bonnet , Poirier Jonathan , El Khoury Ralph , Laguillier-Morizot Christelle , Leguy Marie-Clemence , Thomeret Louis , Bouys Lucas , Guignat Laurence , Assie Guillaume , Groussin Lionel , Guibourdenche Jean , Bertherat Jerome

Introduction: Biological diagnosis of Cushing syndrome relies on three parameters: 24 hours-free urinary cortisol; serum cortisol after 1 mg dexamethasone suppression test; late-night serum or salivary cortisol. These tests allow the diagnosis of cortisol excess but do not help in etiological diagnosis, particularly in the distinction between pseudo-Cushing and ACTH-dependent Cushing syndrome, which is often challenging. The aim of this study was to evaluate the performances o...