The prevalence and characteristic features of cyclicity and variability in Cushing's disease

Author:

Alexandraki Krystallenia I,Kaltsas Gregory A,Isidori Andrea M,Akker Scott A,Drake William M,Chew Shern L,Monson John P,Besser G Michael,Grossman Ashley B

Abstract

ObjectiveCyclical Cushing's syndrome may render the diagnosis and management of Cushing's disease difficult. The aim of the present study was to investigate the prevalence of cyclicity and variability in patients with Cushing's disease, and to identify putative distinctive features.DesignRetrospective case-note study.MethodsWe analysed the case records of 201 patients with Cushing's disease in a retrospective case-note study. Cyclicity was considered as the presence of at least one cycle, defined as a clinical and/or biochemical hypercortisolaemic peak followed by clinical and biochemical remission, followed by a new clinical and/or biochemical hypercortisolaemic peak. The fluctuations of mean serum cortisol levels, as assessed by a 5-point cortisol day curve, defined the variability.ResultsThirty (14.9%; 26 females) patients had evidence of cyclicity/variability. ‘Cycling’ patients were older but no difference in sex or paediatric distribution was revealed between ‘cycling’ and ‘non-cycling’ patients. The median number of cycles was two for each patient, and 4 years was the median intercyclic period. A trend to lower cure rate post-neurosurgery and lower adenoma identification was observed in ‘cycling’ compared with ‘non-cycling’ patients. In multivariate analysis, older patients, longer follow-up, female sex and no histological identification of the adenoma were associated with an increased risk of cyclic disease.ConclusionsThis large population study reveals that cyclicity/variability is not an infrequent phenomenon in patients with Cushing's disease, with a minimum prevalence of 15%. Physicians should be alert since it can lead to frequent problems in diagnosis and management, and no specific features can be used as markers.

Publisher

Bioscientifica

Subject

Endocrinology,General Medicine,Endocrinology, Diabetes and Metabolism

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1. Cushing's syndrome;The Lancet;2023-12

2. Diagnostic challenges in cyclic Cushing's syndrome: a systematic review;The Lancet Diabetes & Endocrinology;2023-08

3. Cushing Syndrome;JAMA;2023-07-11

4. Cortisol excess states;Steroids in the Laboratory and Clinical Practice;2023

5. Mechanism, diagnosis, and treatment of cyclic Cushing’s syndrome: A review;Biomedicine & Pharmacotherapy;2022-09

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