Abstract
Purpose
In Cushing disease, early post-operative serum cortisol fluctuations have not been adequately characterized, and their association with initial remission and recurrence is unclear.
Methods
A retrospective cohort study of patients with Cushing disease was conducted at two institutions. A “riser” was defined a priori as a paradoxical increase in serum cortisol with an immediate incremental increase in serum cortisol over three consecutive cortisol draws separated by roughly 6-h (definition 1). Post hoc analyses used a definition of two consecutive increases (definition 2). Risers were compared to non-risers for initial remission and time-to-recurrence.
Results
A total of 505 patients with Cushing disease were screened, and 469 had adequate data for group assignment. Analysis of post-operative cortisol showed a subgroup of “risers” with a frequency of 3.6% for definition 1 and 42.6% for definition 2. In these patients, cortisol levels were significantly higher until approximately 36 h post-operatively, and cortisol had a significantly longer mean serum half-life. In the post hoc analysis, definition 2 risers had a lower remission rate compared to non-risers (162/196, 82.7%, versus 243/264, 92.0%) with an odds ratio of 0.41 (0.23–0.73; p = 0.003). For both definitions, recurrence was similar between groups.
Conclusions
We found that almost half of Cushing disease patients experienced a temporary increase in serum cortisol level during the early post-operative period. Serum cortisol half-life was longer, and the remission rates were lower, however, recurrence rates were similar to non-risers.
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Made substantial contributions to the conception or design: MPC, AG, MLV, JAJ Jr, ERL Jr. Drafted and revised it critically for important intellectual content: MPC, AG, NI, MLV, JAJ Jr, ERL Jr; Approved the final version to be published: All authors. Agree to be accountable for all aspects of the work: All authors.
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The authors certify that the study was performed in accordance with the ethical standards as laid down in the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards. Institutional review board approval was obtained from each institution.
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Catalino, M.P., Gelinne, A., Ironside, N. et al. Characterization of a paradoxical post-operative increase in serum cortisol in Cushing disease. Pituitary 25, 340–347 (2022). https://doi.org/10.1007/s11102-021-01203-x
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DOI: https://doi.org/10.1007/s11102-021-01203-x